Atheraz

Reach, affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{3}, Reveal Atheraz: Create a colorless Factory artifact token with "{p/c},{t}: Put two 1/1 colorless Construct with defender onto the battlefield.
Destroy this artifact."
When Atheraz enters the battlefield, if it wasn't
casted from your hand by paying it's mana cost, shuffle Atheraz into its owner's library,
then draw two cards.