Strek, Dark Alchemist

Trample, Hexproof
Whenever a legendary creature is put into play
out of its player main phase, you can exile that
creature instead.
{b}: Exile target Legendary Creature.
{u}: Counter target Legendary Creature spell.
When Strek the Dark Alchemist is put into
graveyard from the battlefield, put it again into
play with the next ability:
"{t}: You win the game if there are no other
Legendary Creatures in play"