Simic Ascendancy

“1GU: Put a +1/+1 counter on target creature you control. <br> Whenever one or more +1/+1 counters are put on a creature you control, put that many growth counters on Simic Ascendancy. <br> At the beginning of your upkeep, if Simic Ascendancy has twenty or more growth counters on it, you win the game.”