Freyalise, Sage of Conjuration

Creature tokens with counters you control
have "{t}: add one mana of any color."

{x}{w/u}{g/u},{t}: Create Lotus, a legendary 5/5 green and blue Cat creature token with "When
Lotus enters, remove a counter from X
number of creatures you control and put them on Lotus."

Remove five counters from creature tokens you control: proliferate, proliferate.