Trample Ochre Jelly enters with X +1/+1 counters on it. Split — When Ochre Jelly dies, if it had two or more +1/+1 counters on it, create a token that's a copy of it at the beginning of the next end step. The token enters with half that many +1/+1 counters on it, rounded down.
Ochre Jelly (AFR-330) - Adventures in the Forgotten Realms: (Showcase)