Tiny Tina

+1: Target creature you control gains +1/+1 until end of turn and fights target opponent creature.
-1: Draw a card. If the card's cost is equal to or less than Tiny Tina's loyalty, you may cast it if you discard a card.
-7: Each player reveals the top card of their deck and exiles them. For each creature card exiled this way, cast them under your control for free.