Demon Lord Dante

Affinity for artifacts
(This spell costs 1 less to cast
for each artifact you control.)

When Imskir Iron-Eater enters the battlefield,
you draw X cards and you lose X life,
where X is half the number of artifacts you control, rounded down.
{3}{r}, Sacrifice an artifact: Imskir deals
damage equal to the sacrificed artifact's
mana value to any target.