Rune Ooze

Collective Mass (As this creature enters the battlefield, you may sacrifice it to another Ooze
you control, if you do, add all abilities, power,
and toughness of the Ooze that was sacrificed
onto the Ooze that was sacrificed to)
Whenever this creature blocks, create two 0/1
colorless rune artifact creature tokens with
defender, sacrifice them at the beginning of
your next end step