Ur'drid, the reborn

Haste
{2}{b}: return Ur'drid, the reborn to the
battlefield from either your graveyard
or your command zone.
Whenever Ur'drid, the reborn dies put a 0/3
corpse token with defender on the battlefield.
As long as you control 5 or more corpses,
corpse tokens you control get +3 +0 and
loose defender.