Lil Ugin, the Un-spirited

: Lil' Ugin enters the battlefield with X loyalty counters, where X is the number of times it's left the battlefield. If X > 5, you lose the game.
: If lil' Ugin would leave play, exile it instead, then return it to the battlefield under its owner's control at end of turn.
: When lil' Ugin enters the battlefield, each opponent sacrifices an artifact, enchantment, or land. Then each player proliferates.