When Yuna is played to the field, Search for 1 Eidolon and place it in your hand.
(2A)(W), discard 1 Eidolon: Choose 1 Forward. It gains -3,000 power until the end of the turn. If the discarded Eidolon was a Bahamut, instead make it Active, and it gains +2,000 power, Haste and Preemptive Attack until the end of the turn.