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Chapter 2: Tools / Building Creatures / Design Abilities / Constant and Automatic Abilities

Constant and Automatic Damage

Source Gamemastery Guide pg. 69
Much like for reactions, damage for a constant ability should be pretty low. Usually this value is just below low Strike damage. Automatic abilities like the living wildfire’s explosion ability tend to deal moderate Strike damage or unlimited-use area damage, and can deal even more if they happen only after the creature is dead or otherwise no longer presents a threat.