Minga, the Planned

Costs {1} less to cast for each artifact you control.
Whenever you draw a card, create a 1/1 colorless Construct artifact creature token.
{t}: Sacrifice an artifact: Return an artifact from
your graveyard to the battlefield and draw a card.
{b}{r},{t}, Sacrifice five artifacts: Draw 3 cards and
deal 5 damage to up to any 5 targets.
They will be born of metal. -the Planned