Queen Marchesa

Deathtouch, haste
When Queen Marchesa enters, you become the monarch.
At the beginning of your upkeep, if an opponent is the monarch, create a 1/1 black Assassin creature token with deathtouch and haste.

With thine eyes dimmed, ye will be driven from the Lands Between. Ye will wage war in a land afar, where ye will live, and die.
—Queen Marika