Momo, Prodigy Student

Momo, Prodigy Student enters the battlefield with
3 creation counters. When you draw a card put a creation counter on Momo, Prodigy Student
{t}: Search your library for a artifact with converted
mana cost equal to or less than the number of creation counters on this creature, put that card
onto the battlefield then remove a creation counter. At the beginning of your upkeep if you control 3 or
more artifacts transform this creature