Obe, Apex of Evolution

Mutate {w}{u}{b}{r}{g}
Whenever this creature mutates, search your
library for a creature card with mutate, reveal it,
and put it into your hand.
If You cast Obe, Apex of Evolution for It's
mutate cost, You add {c}{c}{w}{u}{b}{r}{g}. Spend
this mana only to cast a creature spell's mutate
cost