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Below you'll find the five most expensive MTG cards in the FF decks, followed by a list of every card that's around the $5 mark or higher
Both only cost 1 ink, and while Captain Hook gets a +2 Strength when challenging, Mulan allows you to draw a card and then discard a card when played
If the legendary nonland card exiled this way is a modal double-faced card, and the back face is also a nonland card face, you may cast either face, even if the back face isn't legendary
Seifer effectively does, since he exiles the instants and sorceries he allows you to cast from your graveyard
Since you can exert a character with a cost of three or more to do it, you can keep your ink open to potentially cast any of the two cards you just drew