Cxyzthi, Cleanser Of The Old

Whenever Cxyztrhi Cleanser Of The Old is cast you
may destroy target Eldrazi, if you do Cxyzthi loses its color for the rest of the game
Whenever an Eldrazi dies destroy target Eldrazi
Whenever an Eldrazi you control goes into the graveyard you may return target Eldrazi with less
power, toughness or mana value from a graveyard or
exile to the battlefield under your control with "When this creature dies put it on the bottom of it's owner's
library
Partner with Vribrul, Mother Of New Eldrazi