Electrostatic Ooze

When Electrostatic Ooze deals combat damage to
a creature, tap that creature, that creature
doesn't untap during its controllers next untap
step.
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)