Master Chef + Rosie Cotton of South Lane + Crystalline Crawler + Ooze Flux + Branching Evolution
Master Chef
Rosie Cotton of South Lane
Crystalline Crawler
Ooze Flux
Branching Evolution
Infinite +1/+1 counters on certain creaturesInfinite creature tokensInfinite creature ETB
How it works
Activate Ooze Flux by paying 1 and removing a +1/+1 counter from a creature you control, creating a 1/1 Ooze creature token, which will enter the battlefield with two +1/+1 counters due to Branching Evolution and Master Chef.
Rosie Cotton of South Lane triggers, putting two +1/+1 counters on Crystalline Crawler due to Branching Evolution.
Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding 1.