Defect
The Defect is the last of the five characters in Slay the Spire 2 . It is unlocked after completing a run with the Necrobinder . It starts with 75 Max HP. At Ascension 2 and above it starts with 56 HP.
Starting Relic
Cracked Core - At the start of each combat, Channel 1 Lightning . Can be replaced by Infused Core .
Strategy Guide
Overview
Defect feels like the reward for finishing the current unlock chain. If I want passive scaling, orb timing, and a class that can win fights by setting up a board instead of forcing damage every turn, this is where I go.
My quick read
Defect is the class I open when I want the fight to keep working for me even during quieter turns. The appeal is not just that Orbs scale. It is that once the board is set up correctly, Defect keeps producing value even when my hand is not doing anything flashy. The class is strongest when I stabilize first and let the engine win afterward.
When I pick this character
I pick Defect when I want a system-heavy run that still feels cleaner than Necrobinder. This is the class I choose if I enjoy board-state planning, passive scaling, and timing one big payoff instead of forcing damage every turn. It is also the class I reach for when I want to feel clever without spending the whole climb bookkeeping.
What I prioritize early
I decide quickly whether the deck is surviving through Frost , racing with damage, or building toward a later burst kill. I value stable orb generation and cycle before I value cute payoffs. I want one real defensive answer online early, because Defect looks much better once the fight stops threatening me every single turn.
Best build paths
Frost plus Focus control is still the most reliable Defect shell when I want time to solve the rest of the run. Dark Orb burst becomes excellent when I can control the moment the payoff lands instead of hoping it lines up naturally. Aggressive evoke tempo works when the run is feeding me enough frontloaded pressure that I do not need to spend the whole fight building a fortress. My favorite Defect runs usually start the same way: Frost buys me time, then every pick after that is just me choosing how I want to cash that time in.
Common mistakes
Drafting scaling cards as if the engine already exists. Building around Dark too early without enough stall to protect the setup. Ignoring card flow and then blaming bad orb timing for a deck that simply does not cycle well enough. When my Defect deck feels random, it is usually because I built the payoff and forgot to build the turns in between.
Who should skip this character
If I want direct damage, immediate clarity , or a class that feels powerful before the engine is assembled, I would rather start elsewhere. Defect pays me back for patience, but it is a worse fit when I want a run to feel simple from turn one.
Best cards for Defect
I am not going to pretend Defect is solved. The honest version is that there still is not enough full, trustworthy card information in the current source mix to build a serious Defect board with the same confidence I have in the other classes. If I only wanted the short list, these are the cards I trust first. Hover a card to bring it forward. That is better than pretending certainty where none exists. I would rather leave the board pending than publish a fake confident list that will age badly the moment stronger run data appears.
Cards (87)
Attacks (29)
Ball Lightning
Deal 7 damage. Channel 1 Lightning.
Barrage
Deal 5 damage for each Channeled Orb.
Beam Cell
Deal 3 damage. Apply 1 Vulnerable.
Claw
Deal 3 damage. Increase the damage of ALL Claw cards by 2 this combat.
Cold Snap
Deal 6 damage. Channel 1 Frost.
Compile Driver
Deal 7 damage. Draw 1 card for each unique Orb you have.
Focused Strike
Deal 9 damage. Gain 1 Focus this turn.
Go for the Eyes
Deal 3 damage. If the enemy intends to attack, apply 1 Weak.
Gunk Up
Deal 4 damage 3 times. Add a Slimed into your Discard Pile.
Momentum Strike
Deal 10 damage. Reduce this card's cost to 0 Energy.
Sweeping Beam
Deal 6 damage to ALL enemies. Draw 1 card.
Uproar
Deal 5 damage twice. Play a random Attack from your Draw Pile.
FTL
Deal 5 damage. If you have played fewer than 3 cards this turn, draw 1 card.
Null
Deal 10 damage. Apply 2 Weak. Channel 1 Dark.
Refract
Deal 9 damage twice. Channel 2 Glass.
Rip and Tear
Deal 7 damage to a random enemy twice.
Rocket Punch
Deal 13 damage. Draw 1 card. When a Status card is created, reduce this card's cost to 0 Energy this turn.
Scrape
Deal 7 damage. Draw 4 cards. Discard all cards drawn this way that do not cost 0 Energy.
Sunder
Deal 24 damage. If this kills an enemy, gain 3 Energy.
Synthesis
Deal 12 damage. The next Power you play costs 0 Energy.
Tesla Coil
Deal 3 damage. Trigger all Lightning against the enemy.
Adaptive Strike
Deal 18 damage. Add a 0 Energy copy of this card into your Discard Pile.
All for One
Deal 10 damage. Put ALL 0 Energy cards from your Discard Pile into your Hand.
Flak Cannon
Exhaust ALL your Status cards. Deal 8 damage to a random enemy for each card Exhausted.
Helix Drill
Deal 3 damage for each 1 Energy previously spent this turn.
Hyperbeam
Deal 26 damage to ALL enemies. Lose 3 Focus.
Ice Lance
Deal 19 damage. Channel 3 Frost.
Meteor Strike
Deal 24 damage. Channel 3 Plasma.
Shatter
Deal 11 damage to ALL enemies. Evoke all of your Orbs.
Skills (38)
Dualcast
Evoke your rightmost Orb twice.
Zap
Channel 1 Lightning.
Boost Away
Gain 6 Block. Add a Dazed into your Discard Pile.
Charge Battery
Gain 7 Block. Next turn, gain 1 Energy.
Coolheaded
Channel 1 Frost. Draw 1 card.
Hologram
Gain 3 Block. Put a card from your Discard Pile into your Hand. Exhaust.
Hotfix
Gain 2 Focus this turn.
Leap
Gain 9 Block.
Lightning Rod
Gain 4 Block. At the start of the next 2 turns, Channel 1 Lightning.
TURBO
Gain 2 Energy. Add a Void into your Discard Pile.
Boot Sequence
Innate. Gain 10 Block. Exhaust.
Chaos
Channel 1 random Orb.
Chill
Channel 1 Frost for each enemy. Exhaust.
Compact
Gain 6 Block. Transform all Status cards in your Hand into Fuel.
Darkness
Channel 1 Dark. Trigger the passive ability of all Dark Orbs.
Double Energy
Double your Energy. Exhaust.
Energy Surge
ALL players gain 2 Energy. Exhaust.
Fight Through
Gain 13 Block. Add 2 Wounds into your Discard Pile.
Fusion
Channel 1 Plasma.
Glacier
Gain 6 Block. Channel 2 Frost.
Glasswork
Gain 5 Block. Channel 1 Glass.
Overclock
Draw 2 cards. Add a Burn into your Discard Pile.
Scavenge
Exhaust a card. Next turn, gain 2 Energy.
Shadow Shield
Gain 11 Block. Channel 1 Dark.
Skim
Draw 3 cards.
Synchronize
Gain 2 Focus this turn for each unique Orb you have. Exhaust.
Tempest
Channel X Lightning.
White Noise
Add a random Power into your Hand. It's free to play this turn. Exhaust.
Genetic Algorithm
Gain 1 Block. Permanently increase this card's Block by 3. Exhaust.
Ignition
Another player Channels Plasma. Exhaust.
Modded
Gain 1 Orb Slot. Draw 1 card. Increase this card's cost by 1.
Multi-Cast
Evoke your rightmost Orb X times.
Rainbow
Channel 1 Lightning. Channel 1 Frost. Channel 1 Dark. Exhaust.
Reboot
Shuffle ALL your cards into your Draw Pile. Draw 4 cards. Exhaust.
Signal Boost
The next Power you play is played an additional time. Exhaust.
Supercritical
Gain 4 Energy. Exhaust.
Voltaic
Channel Lightning equal to the Lightning already Channeled this combat. Exhaust.
Quadcast
Evoke your rightmost Orb 4 times.
Powers (20)
Bulk Up
Lose 1 Orb Slot. Gain 2 Strength. Gain 2 Dexterity.
Capacitor
Gain 2 Orb Slots.
Feral
The first time you play a 0 Energy Attack each turn, return it to your Hand.
Hailstorm
At the end of your turn, if you have Frost, deal 6 damage to ALL enemies.
Iteration
The first time you draw a Status card each turn, draw 2 cards.
Loop
At the start of your turn, trigger the passive ability of your rightmost Orb.
Smokestack
Whenever you create a Status, deal 5 damage to ALL enemies.
Storm
Whenever you play a Power, Channel 1 Lightning.
Subroutine
Whenever you play a Power, gain 1 Energy.
Thunder
Whenever you Evoke Lightning, deal 6 damage to each enemy hit.
Buffer
Prevent the next time you would lose HP.
Consuming Shadow
Channel 2 Dark. At the end of your turn, Evoke your leftmost Orb.
Coolant
At the start of your turn, gain 2 Block for each unique Orb you have.
Creative AI
At the start of your turn, add a random Power into your Hand.
Defragment
Gain 1 Focus.
Echo Form
Ethereal. The first card you play each turn is played an extra time.
Machine Learning
At the start of your turn, draw 1 additional card.
Spinner
At the start of your turn, Channel 1 Glass.
Trash to Treasure
Whenever you create a Status card, Channel 1 random Orb.
Biased Cognition
Gain 4 Focus. At the start of your turn, lose 1 Focus.
Exclusive Relics (9)
Cracked Core
At the start of each combat, Channel 1 Lightning .
Data Disk
Start each combat with 1 Focus .
Emotion Chip
If you lost HP during the previous turn, trigger the passive ability of all Orbs at the start of your turn.
Gold-Plated Cables
Your rightmost Orb triggers its passive an additional time.
Infused Core
At the start of each combat, Channel 3 Lightning .
Metronome
The first time you Channel 7 Orbs each combat, deal 30 damage to ALL enemies.
Power Cell
At the start of each combat, add 2 zero-cost cards from your Draw Pile into your Hand.
Runic Capacitor
Start each combat with 3 additional Orb Slots.
Symbiotic Virus
At the start of each combat, Channel 1 Dark .
Exclusive Potions (1)
Essence of Darkness
Channel a Dark for each of your Orb Slots.