On Evolve: Select an Omen card that costs 2 play points or less in your cemetery and play it for 0 play points.
During your turn, whenever this follower takes ability damage, select an enemy leader or enemy follower on the field and deal it 3 damage.
QIf my Galmieux, Omen of Disdain takes ability damage during my turn that brings its defense to 0, does its ability still trigger?
AYes. Taking damage triggers this follower's ability. Then, since it has 0 or less defense, it's destroyed. Then, you resolve the ability.
QWhat is ability damage?
AAbility damage is all damage except for damage dealt by two followers in combat or by a follower attacking a leader. For example, if you deal 1 damage to a follower on your field with Disdainful Rending or Disciple of Disdain, that's ability damage.