Gawk, Assassin for Hire

Flying
When Gawk deals combat damage to a player each player shuffles their library, then exiles cards
from the top of their library until they exile a
nonland card, then puts the rest on the bottom
of their library in a random order.
Once each turn, you may play a card exiled with
Gawk by paying life equal to its mana value rather
than paying its mana cost.