Black Hole - Slay the Spire 2
Whenever you spend or gain , deal 3 damage to ALL enemies.
Black Hole
+UPGRADEDWhenever you spend or gain , deal 4 damage to ALL enemies.
Related Mechanics
Synergies & related cards

Deal 21 damage to ALL enemies. Fill your Hand with Debris .
AoE overlap — complements Crash Landing for multi-target encounter coverage.

Ethereal . Deal 9 damage to ALL enemies. ALL enemies lose 9 Strength this turn.
AoE overlap — complements Dying Star for multi-target encounter coverage.

Forge 7. Sovereign Blade now deals damage to ALL enemies.
AoE overlap — complements Seeking Edge for multi-target encounter coverage.

Deal 7 damage to ALL enemies 7 times.
AoE overlap — complements Seven Stars for multi-target encounter coverage.