Pathological Liar

Haste, vigilance, trample, hexproof, double strike, lifelink, flying, death touch, indestructible.
Pathological Liar can't be countered.
Pathological Liar can't be blocked.
Whenever Pathological Liar deals damage to a player, that player loses the game.
When Pathological Liar enters the battlefield, you win the game.
-Pathological Liar