Aeryn, Heart's Desire

Heart Stealer-When Aeryn enters the battlefield,
exile the top card of target opponent's library.
•If it was a creature card, you may cast it, and
you may spend mana as though it were mana of
any colour to cast it.
•If it was a noncreature, nonland card, draw a
card then discard a card.
•If it was a land card, you lose 2 life.