Stymphalian birds, Common, 1 recruit
Aria. Banish. Skirmisher.
Attack N
N= opponent's Dungeon
I feel that a card with both Skirmisher and Banish should cost more than one resource. That this one also has Aria and an Attack element makes me think so more strongly. As proposed, this card could discard two Uncommons from the opponent's hand, attack, and trigger the Aria effect, all for a single recruit.