Rocky the flying famine

This spell can't be countered and enters with +x/+x counters.
Haste, lifelink, hexproof and flying.
{x}add +x/+x counters. This creature gains menace or deathtouch till end of turn.
Afterlife x: depending on counters make x 1/1 flying spirits or make a x/x spirit with flying
{p/b}go to ask Urza and do the action that comes by clicking +1 loyalty