Nice Boi

when Nice Boi enters the battlefield, nice. (put a +1/+1 counter on every creature)
{ut}, put 5 +1/+1 counters on target creature. Only activate this ability if Nice Boi has a power of 20 or greater.
{t}, put a flying counter on target creature, then create a helper token. (it's a token with: sacrifice this creature, put a +1/+1 counter on target creature.)