Fossilize

Fossilize target creature. (Turn that creature face down as an artifact named Fossil, then put a -1/-1 counter on it. It gains "{4}: Turn this artifact face up.
It becomes a Skeleton in addition to its other types.")
Flashback overload {3}{u}{u}{u} (You may cast this card from your graveyard for its flashback overload cost. If you do, change its text by replacing all instances of "target" with "each." Then exile it.)