Kharis&the beholder

Flying
When you cast kharis&the beholder and at the beginning of your upkeep create a 1/1 white human creature token and roll a charisma check(d20)
. Rolling and adding the creatures you control if the total is 11 or more put a +1+1 counter on each creature you control
. On a natural 20 create a token of each non legendary creature you control