The House of Usher

The House of Usher enters the battlefield under an opponents control of your choice.
When The House of Usher enters the battlefield under an opponents control put a curse counter on each creature that player controls.
Creature with curse counters on them gain
vanishing 3.
At the beginning of your endstep if you control no creatures with curse counters on them sacrifice The House of Usher and you lose the game.