Tesla Coil

DefectAttackUncommon
Deal 3 damage.
Trigger all Lightning against the enemy.
  • For 0 Energy it hits one enemy for 3 damage, then runs the passive of every Lightning orb you hold against that same enemy instead of a random one.
  • The orbs stay in their slots.
  • Example: each passive is 3 damage plus your Focus, so with three Lightning orbs the card deals 12, and with 2 Focus on top it deals 18.
  • Upgrade: lifts the hit to 4 and runs each passive twice, so the same three orbs give 22.
Character
Type
Attack
Rarity
Uncommon
Cost
0 Energy
Target
One enemy

When to take Tesla Coil

Draft it once you have two ways to make Lightning, one of the best 0-cost damage cards the Defect gets, focusing passive damage onto one enemy. Upgrade it early.

Cards that synergize with Tesla Coil

Tempest
Skill
X
Channel X Lightning.
Tempest fills the board with Lightning in one play.Channel X Lightning.
Defragment
Power
1
Gain 1 Focus.
Defragment adds to every passive that fires.Gain 1 Focus.
Capacitor
Power
1
Gain 2 Orb Slots.
Capacitor means more orbs sitting ready.Gain 2 Orb Slots.
Lightning Rod
Skill
1
Gain 4 Block.
At the start of the next 2 turns, Channel 1 Lightning.
Lightning Rod refills Lightning at the start of the next two turns.Gain 4 Block.
At the start of the next 2 turns, Channel 1 Lightning.
Zap
Skill
1
Channel 1 Lightning.
Zap and Ball Lightning are the cheap fuel.Channel 1 Lightning.
Ball Lightning
Attack
1
Deal 7 damage.
Channel 1 Lightning.
Zap and Ball Lightning are the cheap fuel.Deal 7 damage.
Channel 1 Lightning.
Ice Lance
Attack
3
Deal 19 damage.
Channel 3 Frost.
Ice Lance Channels Orbs for Tesla Coil to work withDeal 19 damage.
Channel 3 Frost.
Meteor Strike
Attack
5
Deal 24 damage.
Channel 3 Plasma.
Meteor Strike Channels Orbs for Tesla Coil to work withDeal 24 damage.
Channel 3 Plasma.
Consuming Shadow
Power
2
Channel 2 Dark.
At the end of your turn, Evoke your leftmost Orb.
Consuming Shadow Channels Orbs for Tesla Coil to work withChannel 2 Dark.
At the end of your turn, Evoke your leftmost Orb.
Glacier
Skill
2
Gain 6 Block.
Channel 2 Frost.
Glacier Channels Orbs for Tesla Coil to work withGain 6 Block.
Channel 2 Frost.
Refract
Attack
3
Deal 9 damage twice.
Channel 2 Glass.
Refract Channels Orbs for Tesla Coil to work withDeal 9 damage twice.
Channel 2 Glass.
Chaos
Skill
1
Channel 1 random Orb.
Chaos Channels Orbs for Tesla Coil to work withChannel 1 random Orb.
Chill
Skill
0
Channel 1 Frost for each enemy.
Exhaust.
Chill Channels Orbs for Tesla Coil to work withChannel 1 Frost for each enemy.
Exhaust.
Cold Snap
Attack
1
Deal 6 damage.
Channel 1 Frost.
Cold Snap Channels Orbs for Tesla Coil to work withDeal 6 damage.
Channel 1 Frost.
Coolheaded
Skill
1
Channel 1 Frost.
Draw 1 card.
Coolheaded Channels Orbs for Tesla Coil to work withChannel 1 Frost.
Draw 1 card.
Darkness
Skill
1
Channel 1 Dark.
Trigger the passive ability of all Dark Orbs.
Darkness Channels Orbs for Tesla Coil to work withChannel 1 Dark.
Trigger the passive ability of all Dark Orbs.
Fusion
Skill
1
Channel 1 Plasma.
Exhaust.
Fusion Channels Orbs for Tesla Coil to work withChannel 1 Plasma.
Exhaust.
Glasswork
Skill
1
Gain 5 Block.
Channel 1 Glass.
Glasswork Channels Orbs for Tesla Coil to work withGain 5 Block.
Channel 1 Glass.
Null
Attack
2
Deal 10 damage.
Apply 2 Weak.
Channel 1 Dark.
Null Channels Orbs for Tesla Coil to work withDeal 10 damage.
Apply 2 Weak.
Channel 1 Dark.
Rainbow
Skill
2
Channel 1 Lightning.
Channel 1 Frost.
Channel 1 Dark.
Exhaust.
Rainbow Channels Orbs for Tesla Coil to work withChannel 1 Lightning.
Channel 1 Frost.
Channel 1 Dark.
Exhaust.
Shadow Shield
Skill
2
Gain 11 Block.
Channel 1 Dark.
Shadow Shield Channels Orbs for Tesla Coil to work withGain 11 Block.
Channel 1 Dark.
Spinner
Power
1
At the start of your turn, Channel 1 Glass.
Spinner Channels Orbs for Tesla Coil to work withAt the start of your turn, Channel 1 Glass.
Storm
Power
1
Whenever you play a Power, Channel 1 Lightning.
Storm Channels Orbs for Tesla Coil to work withWhenever you play a Power, Channel 1 Lightning.
Trash to Treasure
Power
1
Whenever you create a Status, Channel 1 random Orb.
Trash to Treasure Channels Orbs for Tesla Coil to work withWhenever you create a Status, Channel 1 random Orb.

Relics that synergize with Tesla Coil

Metronome
Metronome Channels Orbs for Tesla Coil to work withThe first time you Channel 7 Orbs each combat, deal 30 damage to ALL enemies.
Infused Core
Infused Core Channels Orbs for Tesla Coil to work withAt the start of each combat, Channel 3 Lightning. Lightning deals 1 additional damage.
Cracked Core
Cracked Core Channels Orbs for Tesla Coil to work withAt the start of each combat, Channel 1 Lightning.
Symbiotic Virus
Symbiotic Virus Channels Orbs for Tesla Coil to work withAt the start of each combat, Channel 1 Dark.
Power Cell
Power Cell looks for 0 Energy cards, and Tesla Coil is oneAt the start of each combat, add 2 zero-cost cards from your Draw Pile into your Hand.
Nunchaku
Nunchaku counts the Attacks you play, and Tesla Coil is a free oneEvery time you play 10 Attacks, gain .
Kunai
Kunai counts the Attacks you play, and Tesla Coil is a free oneEvery time you play 3 Attacks in a single turn, gain 1 Dexterity.
Kusarigama
Kusarigama counts the Attacks you play, and Tesla Coil is a free oneEvery time you play 3 Attacks in a single turn, deal 6 damage to a random enemy.
Ornamental Fan
Ornamental Fan counts the Attacks you play, and Tesla Coil is a free oneEvery time you play 3 Attacks in a single turn, gain 4 Block.
Shuriken
Shuriken counts the Attacks you play, and Tesla Coil is a free oneEvery time you play 3 Attacks in a single turn, gain 1 Strength.
Daughter of the Wind
Daughter of the Wind counts the Attacks you play, and Tesla Coil is a free oneWhenever you play an Attack, gain 1 Block.
Pen Nib
Pen Nib counts the Attacks you play, and Tesla Coil is a free oneEvery 10th Attack you play deals double damage.
Rainbow Ring
Rainbow Ring counts the Attacks you play, and Tesla Coil is a free oneThe first time you play an Attack, Skill, and Power each turn, gain 1 Strength and 1 Dexterity.
Razor Tooth
Razor Tooth counts the Attacks you play, and Tesla Coil is a free oneEvery time you play an Attack or Skill, Upgrade it for the remainder of combat.
Iron Club
Iron Club rewards playing many cards, and Tesla Coil is freeEvery 4 cards you play, draw 1 card.

Changes by version

  1. 7 May 2026Upgraded damage64Beta branch
    Upgraded damage decreased from 6 to 4 and Lightning Triggers increased from once to twice
  2. 5 Feb 2026ArtInternal playtest
    Added portrait art
  3. 17 Jul 2025ReworkInternal playtest
    Reworked Tesla Coil card into an Attack
All 7 patch notes4 older
  1. 5 Jun 2025Cost10Internal playtest
    Cost changed from 1 to 0
  2. 22 May 2025ReworkInternal playtest
    Reworked Tesla Coil card
  3. 1 May 2025ReworkInternal playtest
    Reworked Tesla Coil card
  4. 25 Apr 2025AddedInternal playtest
    Added to the game

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