Silent Build
☠️ Venom Cascade
Stack poison, multiply the trigger, let the timer do the killing
At the start of your turn, apply 2 Poison to ALL enemies.
Upgraded: At the start of your turn, apply 3 Poison to ALL enemies.
Win condition: Apply enough Poison early that the enemy bleeds out over the next several turns. Accelerant and Envenom turn a modest stack into a per-turn avalanche; you survive the wait with Block and Weak.
- S-Tier
- Tier
- Intermediate
- Difficulty
- 10
- Core cards
- Premier scaling kill
- Power
Deck core
Core cards
The cards this build is built around — prioritize these on every run.
Must-pick
At the start of your turn, apply 2 Poison to ALL enemies.
Upgraded: At the start of your turn, apply 3 Poison to ALL enemies.
Apply 5 Poison.
Upgraded: Apply 7 Poison.
Apply 3 Poison to a random enemy 3 times.
Upgraded: Apply 3 Poison to a random enemy 4 times.
Poison is triggered 1 additional time.
Upgraded: Poison is triggered 2 additional times.
Whenever an Attack deals unblocked damage, apply 1 Poison.
Upgraded: Whenever an Attack deals unblocked damage, apply 2 Poison.
Every 3 times you apply Poison, deal 11 damage to ALL enemies.
Upgraded: Every 3 times you apply Poison, deal 15 damage to ALL enemies.
If the enemy has Poison, apply 9 Poison.
Upgraded: If the enemy has Poison, apply 12 Poison.
Whenever you draw a card this turn, apply 3 Poison to ALL enemies.
Upgraded: Whenever you draw a card this turn, apply 4 Poison to ALL enemies.
Retain. Apply 7 Poison.
Upgraded: Retain. Apply 10 Poison.
Sly. Apply 4 Poison to ALL enemies.
Upgraded: Sly. Apply 6 Poison to ALL enemies.
Flex picks
Deal 6 damage. Apply 3 Poison.
Upgraded: Deal 8 damage. Apply 4 Poison.
Gain Block equal to Poison on ALL enemies. Exhaust.
Upgraded: Cost changes from 1 to 0
Apply 2 Weak. Gain 11 Block.
Upgraded: Apply 3 Weak. Gain 14 Block.
Gain 5 Block. Draw 2 cards.
Upgraded: Gain 8 Block. Draw 2 cards.
Gain 4 Block. Next turn, gain 4 Block.
Upgraded: Gain 6 Block. Next turn, gain 6 Block.
Deal 8 damage. Apply 1 Weak.
Upgraded: Deal 10 damage. Apply 2 Weak.
Draw 3 cards. Discard 1 card.
Upgraded: Draw 4 cards. Discard 1 card.
Sly. Draw 2 cards.
Upgraded: Sly. Draw 3 cards.
Remove all Artifact and Block from the enemy. Apply 2 Vulnerable. Exhaust.
Upgraded: Remove all Artifact and Block from the enemy. Apply 3 Vulnerable. Exhaust.
At the end of your turn, Retain up to 1 card.
Upgraded: At the end of your turn, Retain up to 2 cards.
Synergy
Relic priorities
What to grab from shops, bosses and chests to power the engine.
Snecko SkullCore+1 Poison per application is enormous with Noxious Fumes and Bouncing Flask hitting many times per turn.
Twisted FunnelCoreFree 4 Poison to all enemies at combat start — instant timer and an early Outbreak counter.
Ring of the SnakeStrongTwo extra cards turn one helps you find Noxious Fumes and set up faster.
Runic PyramidStrongHolding poison appliers and Accelerant across turns lets you choose the perfect multiplier turn.
Frozen EggSituationalAuto-upgrades Powers you add: a free Noxious Fumes+, Accelerant+, or Envenom+ is a big jump.
Oddly Smooth StoneSituational1 Dexterity each combat shores up the Block you lean on while the timer runs.
Game plan
How to play
Step-by-step through the run, from opening hands to the win.
Honest take
Pros & cons
Strengths
- Ignores enemy Block and Artifact entirely once stacks are applying.
- Excellent against Elites and bosses where the fight lasts long enough to scale.
- Cheap engine (mostly 1-cost) frees energy for defense.
- Multi-enemy rooms melt to Noxious Fumes and Corrosive Wave.
Weaknesses
- Slow to start — weak in short fights where the timer never matures.
- Enemies that gain Artifact can eat a key debuff application at the wrong moment.
- Needs at least one multiplier (Accelerant/Envenom/relic) to beat boss HP pools.
Opening
Mulligan & priorities
What to keep, what to ditch in your opening hands.
- Keep Noxious Fumes always — every turn it is down is permanent lost damage.
- Keep Deadly Poison or Bouncing Flask to put pressure on while the Power scales.
- Keep a cheap Block card so you don't take a chunk before the timer matters.
- Toss Bubble Bubble on the opening hand — it is dead until a stack exists.
- Toss Accelerant if there's no Poison on the board yet; it wants a target first.
Map strategy
Pathing
How to route the map to assemble the build and stay healthy.
Elites over hunting damage
Poison ignores enemy Block and scales with fight length, so it crushes high-HP Elites and bosses. Prioritize Elite paths once Noxious Fumes plus one multiplier are online — your ceiling is highest exactly where other decks struggle.
Grab the Poison relics
Snecko Skull (+1 per application) and Twisted Funnel (4 Poison to all at combat start) are build-defining. Route through ? rooms and shops looking for them; either one meaningfully shortens every fight.
Avoid these
Common mistakes
- Playing Bubble Bubble or Accelerant before any Poison is on the enemy — both need an existing stack to do anything.
- Over-drafting Attacks. Poison is your damage; a bloated attack count dilutes draws to your engine cards.
- Forgetting Poison ticks at end of the enemy's turn, so racing for lethal Attack damage on the same turn the enemy would die to Poison just wastes cards.
- Skipping Block because 'the fight is already won' — a single big hit can end you while you wait out the timer.
- Letting Outbreak sit in hand; play it as a Power so its counter starts ticking with every later application.
Quick answers
FAQ
Common questions about the Venom Cascade Silent build.
Is Venom Cascade good in Slay the Spire 2?
Yes — it is one of the Silent's strongest archetypes because Poison ignores enemy Block and Artifact and scales with fight length, making it a top pick into Elites and bosses. Noxious Fumes re-applies Poison to all enemies for free every turn, and once Accelerant or Envenom multiplies that, even huge boss HP bars bleed out. As an Early Access build the exact Poison numbers may still be tuned, but the core engine is reliably powerful.
What are the best cards for Poison Silent?
Noxious Fumes is the non-negotiable backbone since it re-applies Poison to all enemies every turn. Pair it with Accelerant (triggers each Poison stack an extra time, doubling tick damage), Envenom (your Attacks apply Poison on unblocked hits), and Outbreak (deals damage to all enemies every 3 Poison applications). Bouncing Flask and Deadly Poison front-load the stack so the timer matures faster.
What relics does Venom Cascade want?
Snecko Skull is the dream relic — +1 Poison per application is enormous when Noxious Fumes and Bouncing Flask apply many times per turn. Twisted Funnel is also core, handing you 4 Poison to all enemies at combat start for an instant timer and Outbreak counter. Frozen Egg is a nice situational pickup since it auto-upgrades a Power like Noxious Fumes or Accelerant.
Is Poison Silent beginner-friendly or better at high Ascension?
It is rated Intermediate: the engine is cheap and easy to assemble, but it starts slow and you must remember that Poison ticks at the end of the enemy's turn, so racing for Attack lethal on the same turn wastes cards. It holds up well at high Ascension precisely because it ignores Block and scales into long Elite and boss fights, as long as you keep enough Block (Backflip, Dodge and Roll) to survive the wait.
Provenance
Sources & video guides
This build's strategy is informed by these community creators.
