Retep, Bladecoil

Eminence —Whenever you cast another Artifact
spell, if Retep, Bladecoil is in the command zone
or on the battlefield, Create a Treasure token.
Menace, haste
Whenever Retep, Bladecoil attacks, Tap X
untapped artifacts you control, draw X cards
where X is half the number of artifacts tapped
this way, rounded down.
"It originally was creating etherium cells, but we
advised treasures would be better."
—(Name)