You have at least one +1/+1 counter on a creature you control.
({1} magic symbol) ({G} magic symbol) available.
Steps
Activate Ooze Flux by paying ({1} magic symbol) ({G} magic symbol) and removing a +1/+1 counter from a creature you control, creating two 1/1 Ooze creature tokens, which will enter the battlefield with two +1/+1 counters each due to Primal Vigor and Master Chef.
Rosie Cotton of South Lane triggers twice, putting two +1/+1 counters on Crystalline Crawler and any creature you control due to Primal Vigor.
Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding ({1} magic symbol) ({G} magic symbol) .