Donquixote Doflamingo (060) (OP01-060) - Romance Dawn

[DON!! x2] [When Attacking] (1) (You may rest the specified number of DON!! cards in your cost area.): Reveal 1 card from the top of your deck. If that card is a "The Seven Warlords of the Sea" type Character card with a cost of 4 or less, you may play that card rested.