Doom Sigil
From Archon Arcana - The KeyForge Wiki
Doom Sigil • Shadows • Artifact • Rare • Each creature gains poison.If there are no creatures in play, destroy Doom Sigil. • Artist: Sean Donaldson • Card Number: MM:277, MoMu:259
Commentary
If an ability states an effect is applied to "each creature", the effect is resolved for both Friendly and Enemy creatures.
Source: Rulebook