Barricade

Barricade is a 3-Energy Ironclad rare Power (2 upgraded) that prevents your Block from being removed at the start of each turn. Normally, all Block resets at the beginning of a new turn. Barricade eliminates this reset entirely, allowing Block to accumulate indefinitely across turns. This transforms defensive cards like Impervious (30 Block), Entrench (double Block), and even basic Defends into permanent armor that compounds each turn.

Barricade enables one of the most powerful archetypes in Slay the Spire: play high-Block cards each turn, use Entrench to double what you have, and eventually reach 100+ Block that never disappears. Body Slam converts this into offense. The 3 Energy cost is the main limiter, which is why the upgrade to 2 Energy is significant. One of the Ironclad's most iconic and powerful rare cards.