Master of Etherium's power and toughness are each equal to the number of artifacts you control. Other artifact creatures you control get +1/+1.

This creature enters with three +1/+1 counters on it. Whenever this creature enters or attacks, create a number of 1/1 colorless Gnome artifact creature tokens equal to its power. {2}, Sacrifice another artifact: Put a +1/+1 counter on this creature.

{T}: Put a +1/+1 counter on each artifact creature you control.

Whenever you cast an artifact spell, draw a card.

Flying

Artifact spells you cast cost {1} less to cast.