Mythiarq Guardian, Delphina

:At the end of the battle your vanguard with "Mythiarq" in its card name attacked a grade 3 or greater unit, 1, this unit, and it gets +10000 until end of turn. :At the end of your turn, if you have three or more units with "Mythiarq" in their card names, [retire this unit], choose a card from your drop with "Mythiarq" in its card name different from this card, and put it into hand.