ImperviousGain 30 Block.
Exhaust.
Skill2
Impervious+Gain 40 Block.
Exhaust.
Skill2
Add to deck
Exhaust
Removed until the end of combat.

Impervious

The Ironclad

Impervious+Gain 40 Block.
Exhaust.

Obtained

card rewardsThe Ironclad

Merchant price

StS2
Shop band
142–158GoldBase price: 150 Gold Shop roll: ×0.95–1.05

Slay the Spire

Impervious

Same in Slay the Spire