Reaper Form

Reaper Form is a rare Necrobinder Power that makes all your Attacks also apply Doom equal to the damage dealt for the rest of combat. This transforms every damage card in your deck into a Doom applicator, creating passive Doom accumulation without needing dedicated Doom cards.

Reaper Form turns Poke, Flatten, Rattle, and every other attack into dual-purpose cards dealing damage and stacking Doom simultaneously. Combined with Blight Strike for additional dedicated Doom application and End of Days for AoE execution, Reaper Form completes the Doom engine. Bone Shards dealing damage to ALL enemies now applies Doom to all targets as well.

Reaper Form is a build-defining card for the Necrobinder's Doom archetype. Once active, every combat action contributes to the execution threshold. Against bosses like Test Subject #C10 with high HP, Reaper Form ensures that your attacks are never wasted since the Doom accumulates toward the kill. The Necrobinder's Doom archetype with Reaper Form is one of the strongest late-game strategies in Slay the Spire 2.