M. I. A. M.

Shroud
{x},{t}: Exile target creature card with converted
mana cost X from a graveyard. M. I. A. M.
becomes a copy of that creature, except it's
named M. I. A M., is legendary, and has shroud,
"This creature gets +1/+1 for each card exiled by
it", and this ability.
This creature gets +1/+1 for each card exiled by
it.