
Colossus
Skill
1
Gain 5 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.

Colossus+
Skill
1
Gain 8 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.
Version

Colossus
Skill
1
Gain 5 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.

Colossus+
Skill
1
Gain 8 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.

Colossus
Skill
1
Gain 6 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.

Colossus+
Skill
1
Gain 10 Block.
You receive 50% less damage from Vulnerable enemies this turn.
You receive 50% less damage from Vulnerable enemies this turn.
Colossus
IroncladSkillUncommon
You are viewing an old version of this card
You gain 5 Block (8 upgraded) and a Colossus counter. While it is on you, Attack damage from any enemy that currently has Vulnerable is multiplied by 0.5. The counter is removed when the enemy turn ends, so it covers exactly the attacks coming this turn. Extra copies do not stack the halving. Non-Attack damage, and attacks from enemies without Vulnerable, are unchanged.
When to take Colossus
Only for decks that keep Vulnerable on the enemy most turns, like Bash, Thunderclap or Bag of Marbles at combat start. There it is the best 1-Energy defense the Ironclad has.
Cards that synergize with Colossus

Thunderclap
Attack
1
Deal 4 damage and apply 1 Vulnerable to ALL enemies.
ThunderclapThunderclap puts Vulnerable on every enemy so the halving applies to all of them.Deal 4 damage and apply 1 Vulnerable to ALL enemies.

Break
Attack
1
Deal 20 damage.
Apply 5 Vulnerable.
Apply 5 Vulnerable.
BreakBreak applies 5 Vulnerable, covering several turns.Deal 20 damage.
Apply 5 Vulnerable.
Apply 5 Vulnerable.

Tremble
Skill
1
Apply 3 Vulnerable.
Exhaust.
Exhaust.
TrembleTremble is a cheap 3 Vulnerable.Apply 3 Vulnerable.
Exhaust.
Exhaust.

Vicious
Power
1
Whenever you apply Vulnerable, draw 1 card.
ViciousVicious draws a card each time you apply it, keeping the engine running.Whenever you apply Vulnerable, draw 1 card.

Bash
Attack
2
Deal 8 damage.
Apply 2 Vulnerable.
Apply 2 Vulnerable.
BashBash applies Vulnerable, which Colossus builds onDeal 8 damage.
Apply 2 Vulnerable.
Apply 2 Vulnerable.

Dominate
Skill
1
Apply 1 Vulnerable.
Gain 1 Strength for each Vulnerable on the enemy.
Exhaust.
Gain 1 Strength for each Vulnerable on the enemy.
Exhaust.
DominateDominate applies Vulnerable, which Colossus builds onApply 1 Vulnerable.
Gain 1 Strength for each Vulnerable on the enemy.
Exhaust.
Gain 1 Strength for each Vulnerable on the enemy.
Exhaust.

Taunt
Skill
1
Gain 7 Block.
Apply 1 Vulnerable.
Apply 1 Vulnerable.
TauntTaunt applies Vulnerable, which Colossus builds onGain 7 Block.
Apply 1 Vulnerable.
Apply 1 Vulnerable.

Uppercut
Attack
2
Deal 13 damage.
Apply 1 Weak.
Apply 1 Vulnerable.
Apply 1 Weak.
Apply 1 Vulnerable.
UppercutUppercut applies Vulnerable, which Colossus builds onDeal 13 damage.
Apply 1 Weak.
Apply 1 Vulnerable.
Apply 1 Weak.
Apply 1 Vulnerable.

Shockwave
Skill
2
Apply 3 Weak and Vulnerable to ALL enemies.
Exhaust.
Exhaust.
ShockwaveShockwave applies Vulnerable, which Colossus builds onApply 3 Weak and Vulnerable to ALL enemies.
Exhaust.
Exhaust.

Squash
Attack
1
Deal 10 damage.
Apply 2 Vulnerable.
Apply 2 Vulnerable.
SquashSquash applies Vulnerable, which Colossus builds onDeal 10 damage.
Apply 2 Vulnerable.
Apply 2 Vulnerable.

Juggernaut
Power
2
Whenever you gain Block, deal 6 damage to a random enemy.
JuggernautJuggernaut makes Block count for more, and Colossus gains itWhenever you gain Block, deal 6 damage to a random enemy.

Barricade
Power
3
Block is not removed at the start of your turn.
BarricadeBarricade makes Block count for more, and Colossus gains itBlock is not removed at the start of your turn.

Body Slam
Attack
1
Deal damage equal to your Block.
Body SlamBody Slam makes Block count for more, and Colossus gains itDeal damage equal to your Block.

Demonic Shield
Skill
0
Lose 1 HP.
Give another player Block equal to your Block.
Exhaust.
Give another player Block equal to your Block.
Exhaust.
Demonic ShieldDemonic Shield makes Block count for more, and Colossus gains itLose 1 HP.
Give another player Block equal to your Block.
Exhaust.
Give another player Block equal to your Block.
Exhaust.

Unmovable
Power
2
The first time you gain Block from a card each turn, double the amount gained.
UnmovableUnmovable makes Block count for more, and Colossus gains itThe first time you gain Block from a card each turn, double the amount gained.
Beacon of Hope
Power
1
Whenever you gain Block on your turn, other players gain half that much Block.
Beacon of HopeBeacon of Hope makes Block count for more, and Colossus gains itWhenever you gain Block on your turn, other players gain half that much Block.

Entrench
Skill
2
Double your Block.
EntrenchEntrench makes Block count for more, and Colossus gains itDouble your Block.

Prolong
Skill
0
Next turn, gain Block equal to your current Block.
Exhaust.
Exhaust.
ProlongProlong makes Block count for more, and Colossus gains itNext turn, gain Block equal to your current Block.
Exhaust.
Exhaust.
Relics that synergize with Colossus
Bag of MarblesBag of MarblesBag of Marbles makes turn 1 Colossus work.At the start of each combat, apply 1 Vulnerable to ALL enemies.
Hand DrillHand DrillHand Drill applies Vulnerable, which Colossus builds onWhenever you break an enemy's Block, apply 2 Vulnerable.
Parrying ShieldParrying ShieldParrying Shield makes Block count for more, and Colossus gains itIf you end a turn with at least 10 Block, deal 6 damage to a random enemy.
Sturdy ClampSturdy ClampSturdy Clamp makes Block count for more, and Colossus gains itUp to 10 Block persists across turns.
Pael's LegionPael's LegionPael's Legion makes Block count for more, and Colossus gains itDoubles Block gained from a card, then goes to sleep for 2 turns.
VambraceVambraceVambrace makes Block count for more, and Colossus gains itThe first time you gain Block from a card each combat, double the amount gained.
Changes by version
- Block gain decreased from 5 to 4 (upgraded 8 to 7)
- Rarity changed from Rare to Uncommon
- 12 Mar 2026Bug fixFixed an issue with Colossus card's hovertips when playing in German
All 8 patch notes5 older
- Added portrait art
- Colossus card now specifies that it only reduces damage for the player who played it
- Block decreased from 6 to 5 (upgraded 10 to 8)
- Added Crimson Mantle, Unmovable, Conflagration, Fight Me, Winged Jump, Pulverize, Colossus, and Veteran cards
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.











