Devon, Lost and Confused

+1: Draw a card, then target opponent discards a card.
-3: Target opponent exiles cards from the top of their library until they exile a land. You may cast these cards, using mana of any color.
-8: You gain an emblem with, "If a card would enter an opponent's GY, instead exile it. You may cast cards exiled this way, using mana of any color.