Myaxx, Azmuth's Assistant

Affinity for artifacts.

Myaxx enters with X +1/+1 counters on it, where X
is 1 plus the amount of colored mana used to cast it.

Metalcraft — At the beginning of your upkeep, if
you control three or more artifacts, return a card
from your graveyard to your hand with mana value
less than or equal to Myaxx's power.