Mo & Krill vs Vyper

Do

• Plan for Divine Barrier Divine Barrier 6,400 souls Tier 4ArmorPress +55s Cooldown +0.2s Cast Delay +1.5 Out of Combat Regen +6s Buff Duration +600 Barrier +10% Ability Range +10% Radius Builds from Guardian Ward — know which tier it sits in so you are not improvising at the shop.
• Know what Petrifying Bola looks like. It is the cooldown this lane revolves around.

Avoid

• Walking to lane on the same path every wave against a hero with Vyper's engage range.

Do

• 780 HP with no heal, no barrier until Slither Slither A permanent passive that lengthens her slides, lets her slide uphill instead of stalling, and lets her turn much more sharply while sliding. Mobility +15% slide distance base, +20% more at T1; Defensive T3 grants a 180 barrier for 4s on slide, with an 8s internal cooldown before… 1 +20% slide distance 2 +2 stamina 5 on slide, gain a 180 barrier for 4s (8s internal cooldown); T3, and no damage reduction anywhere
• Lethal Venom Lethal Venom 10m Range28s Cooldown Injects a target with venom that detonates after a short delay. Damage 20 minimum (about 0.65x spirit scaling) up to 140 maximum (about 2.79x… 1 +31.5 maximum venom damage 2 -40% healing reduction and -12s cooldown (28s base) 5 bullets also build up Lethal Venom is only 10m at base, so she has to actually be in the enemy's face to use her best damage tool
• 930 base health gives them a large health pool that is hard to push out of lane.

Avoid

• Four base stamina plus Slither gives her more dodge and reposition resource than most laners, so she wins movement-based trades
• The Rattler's no-ammo-while-sliding quirk means she can pressure continuously without reload downtime

Do

• Their first real spike is Screwjab Dagger T2 — respect it from that point, not before.
• Your spike is Scorn Scorn 13s Cooldown A burst of damage to everything close by that converts a portion of the damage dealt into healing, with a substantially larger return when the damage lands on enemy heroes. Crowd Control None at base. T3 adds a stacking 15% damage debuff on enemies hit, lasting… Damage 45 damage base, scaling with spirit at 0.675, with a 13s base cooldown. Defensive The heal is the main defensive layer. 1 +30 damage. 2 -5s cooldown, +1m radius. 5 applies a stacking 15% damage debuff to enemies hit for 16s. first two points (laning 0-10min): The Scorn/Scorn opener front-loads their sustain and wave clear.

Avoid

• Taking an even fight against Vyper on their spike timing when you could take the same fight ten minutes later on yours.

Do

• Watch for Petrifying Bola. It is a thrown projectile with visible travel — sidestep the direct hit and you take only 50 damage and a 1.5s slow instead of 180 and a 2.2-3.2s petrify
• Root or immobilise her — Warden's Binding Word Binding Word 15m Range34s Cooldown Curses a targeted enemy hero. Crowd Control 1.75s immobilise (T2 adds +0.75s, so up to 2.5s) if the target fails the… Damage 110 (about 2.44x spirit scaling) when it lands Defensive Rooting a diver in place is a strong self-peel 1 Warden deals +20% bullet damage to trapped heroes for 5s 2 +0.75s immobilise duration 5 -14s cooldown (34s base) and silences the target until they escape or are immobilised , Venator's Hex-Lined Snap Trap Hex-Lined Snap Trap 28s Cooldown Kicks out a trap that arms after a short delay and then sits on the ground for up to 30 seconds. Crowd Control 1.25s immobilize (T2 pushes it to 2.25s) Damage 80 spirit (about 2.2x spirit scaling); Defensive Acts as a tripwire behind Venator so flankers cannot reach him unpunished 1 -11s cooldown (28s base) 2 +1s immobilize duration 5 +1 charge and +30% damage dealt to revealed targets and Vindicta's Stake Stake 40s Cooldown Throws a stake that embeds where it lands. Crowd Control Tether for 1.75s (T3 adds +0.75s) restricting movement to a 9m leash, plus a… Damage 40 spirit base, scaling with Spirit Power; Mobility none for Vindicta 1 +45 damage 2 -22s cooldown (40s base down to 18s) 5 +0.75s tether duration and +2m capture radius all stop a slide dead, which removes both her mobility and her infinite-ammo uptime simultaneously

Avoid

• Spending your own escape before Petrifying Bola is on cooldown.

• Petrifying Bola Ultimate

  Once this lands the fight is usually already decided — 2.2s petrify on a direct hit (T3 adds +1s, up to 3.2s); -40% movement slow for 1.5s in the area.

  • It is a thrown projectile with visible travel — sidestep the direct hit and you take only 50 damage and a 1.5s slow instead of 180 and a 2.2-3.2s petrify
  • Spread out so a direct hit can only land on one person; pre-T3 the area component is a slow, not a disable
  • If you are petrified you take no damage, so the correct use is to treat it as a forced defensive window — have your team disengage or reposition during it rather than trying to fight
• Screwjab Dagger Ability 1

  Not lockdown, but it makes disengaging cost more than it should: -28% move slow on first hit, -12% more per stack, lasting 10s.

  • Break line of sight for 10s and every stack falls off, resetting her whole combo
  • The dagger is a travelling projectile — strafing and using cover during her approach denies the stacks she needs
  • Buy Bullet Resist deeper than she can shred (Metal Skin Metal Skin 3,200 souls Tier 3ArmorInstantCast +24s Cooldown +5s Duration +12% Bullet Resist -20% Dash Distance +20% Gravity Scale , Bullet Armor) so the T2 resist reduction does not open you up to The Rattler
• Slither Ability 3

  It is her movement identity. Combined with her gun not consuming ammo while sliding, Slither lets her circle a target at speed, never reload, and enter and exit fights from angles that other heroes cannot take.

  • Fight her on flat or enclosed ground — Slither's uphill sliding and long slides are worth far less where there is no slope and no room to build speed
  • Root and immobilise effects (Warden's Binding Word, Venator's Hex-Lined Snap Trap, Vindicta's Stake) stop a slide dead and remove both her mobility and her infinite-ammo state
  • The T3 barrier is only 180 for 4s on an 8s internal cooldown; burst through it rather than chipping at it

1. 1 Petrifying Bola

   Petrifying Bola first — 115s cooldown post-09-16-2026 is the longest cooldown in her kit and her only Hard CC; force a miss and then take the objective

2. 2 Lethal Venom

   Lethal Venom second: it is her execute and her anti-heal in one, and at base 28s (16s at T2) making her spend it on a frontliner buys your carry a full rotation of safety

3. 3 Screwjab Dagger

   Screwjab Dagger third: charges regenerate quickly and T3 refunds 55% on hit, so do not spend resources baiting it — break line of sight to drop the stacks instead

• Essentially no defensive kit: 780 HP and a 180 barrier at Slither T3 is the entire package Strong evidence
• Everything meaningful happens inside 10-33m, so she is helpless against long-range poke Strong evidence
• Petrify blocks damage, so a badly placed Bola actively protects the enemy from her own team Strong evidence
• You both win by jumping on someone, which means the loser is whoever jumps first. An entry spends mobility, and a hero who has spent their mobility is the ideal target for a hero who has not — so the fight between you is decided before contact, by who can wait longer. The way out of the stalemate is to force it with someone else's engage and arrive second onto a target they have already committed to. Strategic

• Screwjab Dagger stacks strip up to -64% of your movement speed and, at T2, up to -26% of your Bullet Resist, so you get slower while she gets stronger against you Strong evidence
• Lethal Venom detonates after a 3s delay for up to 140-172 damage scaled on your missing health, and at T2 it cuts your healing by 40% — the moment you try to disengage and heal is exactly when it lands Strong evidence
• Lethal Venom ignores Petrify's damage block, so relying on Petrify immunity to survive it does not work Strong evidence
• Petrifying Bola directly hits for 180-230 and petrifies you for 2.2-3.2 seconds; at T3 it petrifies everyone in a 12m radius Strong evidence
• Her gun does not consume ammo while sliding, so with Slither she can circle-strafe a target at 94 burst DPS with no reload window to punish Strong evidence

• Root or immobilise her — Warden's Binding Word, Venator's Hex-Lined Snap Trap and Vindicta's Stake all stop a slide dead, which removes both her mobility and her infinite-ammo uptime simultaneously Strong evidence
• Break line of sight for 10 seconds to drop all Screwjab Dagger stacks and reset her damage setup entirely Strong evidence
• Fight her beyond 33m where The Rattler falls off and Lethal Venom's 10m cast range is irrelevant — Vindicta from Flight Flight 13s Duration42s Cooldown Vindicta lifts off and flies freely for an extended duration. Damage +10 spirit damage per bullet while airborne (T3 adds +10 more with improved… Mobility 13s of free flight on a 42s cooldown; Defensive Being airborne dodges most ground-targeted abilities and puts her out of… 1 +50% base ammo capacity during Flight 2 +10s duration (13s base up to 23s) 5 hero kills refresh Flight's duration; and Venator's bolts beat her outright at range Strong evidence
• Burst through the Slither T3 barrier (180 for 4s, 8s internal cooldown) rather than chipping at it, and focus her the moment it is on cooldown Strong evidence
• Sidestep the Bola projectile; a near-miss is 50 damage and a slow instead of 180-230 and a 3-second disable Strong evidence
• Against Vyper the item that changes the matchup is Slowing Hex Slowing Hex 1,600 souls Tier 2TechPress +29s Cooldown +3.5s Duration +0.1s Cast Delay +16% Move Speed -26% Dash Distance , and not for the slow. It silences movement abilities and movement items — that is their dash, their blink, their Warp Stone Warp Stone 3,200 souls Tier 3ArmorInstantCast +16s Cooldown +30% Bullet Resist +6s Buff Duration and their Phantom Strike Phantom Strike 6,400 souls Tier 4ArmorPress +35s Cooldown +0.35s Cast Delay +8 Spirit Power +15% Weapon Damage +40% Move Speed +3s Slow Duration all turned off at once — and raises their gravity to 120% on top. At Tier II Spirit for 1,600 it is the cheapest way to convert a mobility advantage into a stationary target, and you deal the Spirit Damage needed to apply the follow-up. Strong evidence
• Vyper adds barrier, not health, and barriers behave differently enough to change how you spend your combo. Resists apply before the barrier depletes, so a barrier multiplies with their resist rather than bypassing it — and it decays on its own. Overflow damage carries straight through to health, so one large hit does not stop at the barrier boundary. That argues for landing your whole burst in one window rather than chipping: chip is exactly what a decaying pool is designed to absorb. Strong evidence

• The 3s Lethal Venom buildup: she has committed the cooldown, and if you break line of sight and reposition she gets the damage but no follow-up Strong evidence
• The 8s internal cooldown between Slither T3 barrier procs — in that window she is a 780 HP hero with nothing Strong evidence
• Any moment she is not sliding: her SMG consumes ammo normally and she has to reload, which is her only DPS gap Strong evidence
• After a whiffed Petrifying Bola she has no Hard CC for 95-115 seconds Strong evidence
• Her entry — she is a flank carry with no engage tool, so catching her on the approach before she reaches slide speed removes her whole plan Strong evidence
• When Vyper puts up a barrier, do not reset the trade and wait for it to drop. Overflow damage carries through to health, so a single large hit spends the barrier and keeps going in one action — there is no wasted remainder. What does get wasted is chip, because barriers decay on their own and small hits are exactly what a temporary pool absorbs for free. Either commit your burst through it or disengage entirely; the middle option gives them a free absorb. Strong evidence

• Vyper will be their Urn runner and you are the one who can stop it. The Urn cannot be voluntarily dropped — it comes loose only on melee, a Stun, or death — so chip damage and slows do not deny a delivery, your Hard CC does. Hold it for the carry rather than spending it on the approach fight, and note the favoured team gets +50% Bullet and Spirit Resist in a 60m bubble while carrying and depositing, which is why trying to burst the runner down usually fails. Documented
• Your kit is built around lockdown and that is worth less on the Mid Boss than on Vyper — it carries 35% Debuff Resist as of 03-06-2026, so your disables run roughly two-thirds as long on it. Plan the take around damage and positioning rather than a CC chain, and spend the chain on Vyper if they contest. The payoff is worth the trip: 3,000 souls + 50 per minute, two permanent buffs each, and a Rejuvenator crystal giving up to three single-use revives that return a player at full health after 3 seconds, for 3 minutes. Documented

• Stacking a second damage-reduction debuff onto Vyper is close to a wasted slot: since 05-22-2026 total damage-reduction debuffs stack diminishingly rather than additively. If someone on your team already brings one, your souls buy more as anti-heal or as resist shred, both of which sit on different multipliers. Coordinate this before the game rather than discovering it in the fight — two players independently buying Inhibitor Inhibitor 6,400 souls Tier 4ArmorPassive +150 Bonus Health +5s Debuff Duration -30% Damage Penalty +10% Weapon Damage -40% Incoming Healing against their carry is a common and invisible waste. Documented
• You have peel and Vyper is the dive threat, so your job in the fight is not damage — it is being in range of whoever they are jumping on. Position between their entry point and your squishiest teammate and hold your peel tool for the moment they commit, not for the moment they appear. Strategic

• Vyper wins by choosing where the fight happens. Take your position before the zoning goes down, not after — once the area is committed you are fighting on their terms, and walking in to contest it is exactly the mistake the kit is built to farm. Strategic

• Divine Barrier (vitality T4) — This lineup gets its backline assassination from Vyper. Buy on supports to cleanse a focused ally's debuffs and shield them through a burst window from across the fight. Documented
• Majestic Leap Majestic Leap 3,200 souls Tier 3ArmorInstantCast +45s Cooldown +5s Interrupt Cooldown +100% Air Control +50% Air Control +32% Move Speed +2.5s Slow Duration +8s Barrier Duration (vitality T3) — Buy to escape ground-based lockdown and to rotate across the map quickly. That matters here because of the zoning and area denial from Vyper. Documented
• Stamina Mastery Stamina Mastery 3,200 souls Tier 3ArmorPassive +2 Stamina +18% Stamina Recovery +23% Air Jump/Dash Distance Builds from Extra Stamina (vitality T3) — Buy when dodging telegraphed abilities and disengaging is how you survive. That matters here because of the zoning and area denial from Vyper. Strong evidence

• If you learned to play this matchup before 09-16-2026 you probably dash away from Vyper and parry on the way out. That no longer works: parrying during a regular dash now cancels the dash and its momentum, so you parry standing still exactly where they wanted you. Parry first and dash second, or accept that the parry is a commitment to hold ground. Note also that a whiffed parry is a 4.5-second cooldown against a hero who only needs one window. Documented