Pohtahtoh, Locus of Nothing

Pohtahtoh, Locus of Nothing enters the
battlefield with 5 +1/+1 counters on it.
At the beginning of every upkeep, remove a
+1/+1 counter from Pohtahtoh, Locus of
Nothing.
When Pohtahtoh, Locus of Nothing enters a graveyard, that graveyard's controller loses the
game.
{3}: Give control of Potahtoh to any opponent.