River Herald's Ascension

Ascend (At the beginning of your upkeep, if you control ten or more permanents, you get the city's blessing for the rest of the game.)
At the beginning of your upkeep, put a +1+1 counter on target creature you control. If you have the city's blessing, instead untap that creature, put a +1+1 counter on it and it
gains hexproof until end of turn.