Xalrog, Dragon Overlord

Flying, Trample, Deathtouch, Indestructible
Whenever Xalrog, Dragon Overlord deals
damage to a player, that player exiles three cards
from their hand. Until end of turn, you may play
those cards without paying their mana cost. You
gain a life for each card exiled this way.
"I rule over the wastelands. Any creature foolish
enough to cross my path will be executed."