Ugin, Soul of Tarkir

Flying, Vigilance, Lifelink
Cascade, Cascade (When Ugin, Soul of Tarkir
enters the battlefield, reveal cards from the top
of your library until you reveal a permanent that is equal to or less than his mana cost. Play that spell,
then repeat this process once more.).
{10}: Exile Ugin, soul of Tarkir, then return him
to the battlefield, transformed.