アイアンクラッド

A Cost 2 skill instantly granting 30 Block (40 upgraded) then Exudes. One-shot usage, but 30-40 Block at 2 cost is top-class defense among all Ironclad cards. As an Exude, it can't be reused every turn, but a single use during a boss's big turn prevents damage equivalent to several turns. Combined with Barricade (Block doesn't decay), 30-40 Block persists beyond the Exude turn — game-changing. Upgraded 40 Block virtually nullifies most boss single-turn damage, making it an ultra-reliable emergency button.

Time it for a boss or elite's big attack turn to zero out damage. Save it when the intent shows a huge strike. With Barricade in play, the 30-40 Block persists for multiple turns, building the strongest defensive wall. With Body Slam (damage = Block), the same turn can deal 30-40 damage. Upgraded 40 Block also acts as insurance when Offering -> Whirlwind combos fail. Since it's Exude, one copy is enough.

• Barricade: Block doesn't expire at turn start. Impervious's 30-40 Block persists as a monster wall.
• Body Slam: Damage equals current Block. Stack Block via Impervious, then Body Slam 30-40 damage.
• Juggernaut: Damage on Block gain. Impervious's big Block may trigger multiple times.
• Feel No Pain: Block on Exude. Impervious's Exude also triggers bonus Block.
• Evil Eye: Bonus Block on Exude turn. Same turn as Impervious maximizes Evil Eye too.

• Ironclad Barricade Build (A Tier)