Power Cell

Power Cell

RareDefect
At the start of each combat, add 2 zero-cost cards from your Draw Pile into your Hand.
  • Turn 1: pulls up to 2 random cards that currently cost 0 Energy out of your Draw Pile into your hand.
  • Not X-cost: X-cost cards never count, and the cost check happens at that moment.
  • On top: of your normal draw, so a deck with two candidates opens with 7 cards.
  • Turn 1 only, Rare, unlocked by the Laser Beams epoch, 275 Gold.
Rarity
Rare
Character
Defect
Shop price
275 gold
Unlock
Laser BeamsKill 15 Bosses with the Defect

When to take Power Cell

Good in a Defect deck running three or more 0-cost cards, since fewer than that makes it whiff often. Buy it with a Claw package or free setup Skills for a turn-1 combo.

Cards that synergize with Power Cell

Claw
Attack
0
Deal 3 damage.
Increase the damage of ALL Claw cards by 2 this combat.
Claw arrives early and starts scaling on turn 1.Deal 3 damage.
Increase the damage of ALL Claw cards by 2 this combat.
Beam Cell
Attack
0
Deal 3 damage.
Apply 1 Vulnerable.
Beam Cell and Go for the Eyes give free debuffs immediately.Deal 3 damage.
Apply 1 Vulnerable.
Go for the Eyes
Attack
0
Deal 3 damage.
If the enemy intends to attack, apply 1 Weak.
Beam Cell and Go for the Eyes give free debuffs immediately.Deal 3 damage.
If the enemy intends to attack, apply 1 Weak.
Hotfix
Skill
0
Gain 2 Focus this turn.
Exhaust.
Hotfix and Chill are free setup you want first.Gain 2 Focus this turn.
Exhaust.
Chill
Skill
0
Channel 1 Frost for each enemy.
Exhaust.
Hotfix and Chill are free setup you want first.Channel 1 Frost for each enemy.
Exhaust.
Supercritical
Skill
0
Gain 4.
Exhaust.
Supercritical is 4 Energy on the opening turn.Gain 4.
Exhaust.
Feral
Power
2
The first time you play a
0 Attack each turn,
return it to your Hand.
Feral returns the first zero-cost Attack each turn, so a Power Cell Claw keeps coming back.The first time you play a
0 Attack each turn,
return it to your Hand.
Boost Away
Skill
0
Gain 6 Block.
Add a Dazed into your Discard Pile.
Boost Away costs 0 Energy, which is what Power Cell looks forGain 6 Block.
Add a Dazed into your Discard Pile.
Boot Sequence
Skill
0
Innate.
Gain 10 Block.
Exhaust.
Boot Sequence costs 0 Energy, which is what Power Cell looks forInnate.
Gain 10 Block.
Exhaust.
FTL
Attack
0
Deal 5 damage.
If you have played fewer than 3 cards this turn, draw 1 card.
FTL costs 0 Energy, which is what Power Cell looks forDeal 5 damage.
If you have played fewer than 3 cards this turn, draw 1 card.
Helix Drill
Attack
0
Deal 3 damage for each previously spent this turn.
Helix Drill costs 0 Energy, which is what Power Cell looks forDeal 3 damage for each previously spent this turn.
Modded
Skill
0
Gain 1 Orb Slot.
Draw 1 card. Increase this card's cost by 1.
Modded costs 0 Energy, which is what Power Cell looks forGain 1 Orb Slot.
Draw 1 card. Increase this card's cost by 1.
Overclock
Skill
0
Draw 2 cards.
Add a Burn into your Discard Pile.
Overclock costs 0 Energy, which is what Power Cell looks forDraw 2 cards.
Add a Burn into your Discard Pile.
Reboot
Skill
0
Shuffle ALL your cards into your Draw Pile.
Draw 4 cards.
Exhaust.
Reboot costs 0 Energy, which is what Power Cell looks forShuffle ALL your cards into your Draw Pile.
Draw 4 cards.
Exhaust.
Tesla Coil
Attack
0
Deal 3 damage.
Trigger all Lightning against the enemy.
Tesla Coil costs 0 Energy, which is what Power Cell looks forDeal 3 damage.
Trigger all Lightning against the enemy.
TURBO
Skill
0
Gain .
Add a Void into your Discard Pile.
TURBO costs 0 Energy, which is what Power Cell looks forGain .
Add a Void into your Discard Pile.
Believe in You
Skill
0
Another player gains .
Believe in You costs 0 Energy, which is what Power Cell looks forAnother player gains .
Bolas
Attack
0
Deal 3 damage.
At the start of your next turn, return this to your Hand.
Bolas costs 0 Energy, which is what Power Cell looks forDeal 3 damage.
At the start of your next turn, return this to your Hand.
Brightest Flame
Skill
0
Gain .
Draw 2 cards.
Lose 1 Max HP.
Brightest Flame costs 0 Energy, which is what Power Cell looks forGain .
Draw 2 cards.
Lose 1 Max HP.
Byrd Swoop
Attack
0
Deal 14 damage.
Byrd Swoop costs 0 Energy, which is what Power Cell looks forDeal 14 damage.
Clash
Attack
0
Can only be played if every card in your Hand is an Attack.
Deal 14 damage.
Clash costs 0 Energy, which is what Power Cell looks forCan only be played if every card in your Hand is an Attack.
Deal 14 damage.
Dark Shackles
Skill
0
Enemy loses 9 Strength this turn.
Exhaust.
Dark Shackles costs 0 Energy, which is what Power Cell looks forEnemy loses 9 Strength this turn.
Exhaust.
Dramatic Entrance
Attack
0
Innate.
Deal 11 damage to ALL enemies.
Exhaust.
Dramatic Entrance costs 0 Energy, which is what Power Cell looks forInnate.
Deal 11 damage to ALL enemies.
Exhaust.
Enlightenment
Skill
0
Reduce the cost of ALL cards in your Hand to 1 this turn.
Exhaust.
Enlightenment costs 0 Energy, which is what Power Cell looks forReduce the cost of ALL cards in your Hand to 1 this turn.
Exhaust.
✦

Related relics

Cracked CoreBeating RemnantKunaiPocketwatchRainbow RingShurikenBag of MarblesBrilliant ScarfMusic BoxOrichalcum

Changes by version

  1. 19 Feb 2026ArtInternal playtest
    Added assets
    TextInternal playtest
    Lidar to Power Cell

Internal playtest notes are from before the Early Access release. Names and numbers in them can differ from the game today.

Purchase today
If you haven't bought Slay The Spire 2 yet, it's time. Support the devs, they made an amazing game.Get it on Steam