Nameless Biomancer

Nameless (This creature has the names of all cards
at all times.)
Whenever a creature you control with nameless
dies, you may exile it.
{6}{g/u}{g/u}: Create an X/X green and blue Mutant creature token with the abilities of all cards exiled
with Nameless Biomancer, where X is the total
power among the exiled creatures. Then flip a
coin, if you lose the flip, that creature fights
Nameless Biomancer.