Kurumi the Time Eater

Lifelink, Menace
{u}{b}{r}, Create a token that's a copy of Kurumi the Time Eater, except it isn't Legendary and has Haste.
Whenever Kurumi attacks, you may pay {x} and X life, each opponent loses X life and up to one creature each opponent you're attacking controls gets -X/-X until end of turn. Kurumi gets +X/+X until end of turn.