

Put a Fangs of Ardent Destruction token into your EX area.
During your turn, whenever this takes ability damage, look at the top 2 cards of your deck. You may put one of them into your EX area. If it's an Omen card, it costs 3 less to play this turn. Bury the rest.
QIf this follower takes ability damage during my turn that brings its defense to 0, does its "whenever this takes ability damage" ability still trigger?
AYes, it does. You would resolve the automatic ability after this follower is destroyed.
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. Damage from Strike abilities, although triggered by an attack, is considered ability damage.