Yumei, Stable Amalgam

Trample, Ravenous, Devour X
X is equal to the non {x} {b} spent to cast Yumei
{r}: remove a +1/+1 counter from Yumei.
exile the top card of your library. you may play that card until the end of your next turn.
{x}, Remove X +1/+1 counters from Yumei, put that many counters on another target creature
{b}{b}{r}{g}: sacrifice another creature add +1/+1 counters to Yumei equal to that creatures power