Skyleach Swarm

Devour 1, flying
{p/c}{p/u}{p/b}, Exile target creature card and target
artifact card from your graveyard: Create a token
that's a copy of Skyleach Swarm.
Whenever Skyleach Swarm dies, you may put a
+1/+1 counter on target artifact creature for each
+1/+1 counter on Skyleach Swarm.
All flesh will serve.