Slungor, of Ooze and Bone

Eminence — Skeleton and Ooze creatures you
control are Skeletons and Oozes in addition to
their other types and enter the battlefield with an
additional +1/+1 counter on them.
Whenever another nontoken Ooze creature you
control with two or more +1/+1 counters on it
dies, you may pay {2}{g}. If you do create two
2/2 green Ooze creature tokens with "When this
creature dies, create two 1/1 green Ooze creature
tokens.