Mutant Alien Queen

Defender
Mutant Alien Queen enters the battlefield with
three birth counters on it.
At the beginning of each upkeep, remove a birth counter from Mutant Alien Queen. Then if it
has no birth counters on it, Sacrifice this
creature and create one Newborn token.
Acid Blood (when this creature is destroyed by
combat, place a -1/-1 counter, on the create who destroyed it.)