Whenever you play a spell, select an enemy follower on the field and deal it 2 damage.
QIf I have multiple copies of this follower on my field, and I play a spell card, will each copy's ability trigger?
AYes, they will.
QIf I play a Quick spell in response to an opponent's attack, will it trigger this follower's ability?
AYes, it will. Also, this follower's ability will resolve directly after your Quick spell resolves, so it is possible to destroy the attacking enemy follower before it deals any damage.