Dondarian, Savage Herald

When Dondarian attacks, it becomes a copy of
target creature in your graveyard until end of
turn, except it's named Dondarian, Savage
Herald, it's Legendary, it gets +0/+4 and it has
all abilities of Dondarian.
At the beginning of your end step, if Dondarian
dealt combat damage to a player this turn, return
target creature card from your graveyard to the
battlefield.