Mirrodin Besieged 057/254 (The List Reprints)

As this enchantment enters, choose Mirran or Phyrexian. • Mirran — Whenever you cast an artifact spell, create a 1/1 colorless Myr artifact creature token. • Phyrexian — At the beginning of your end step, draw a card, then discard a card. Then if there are fifteen or more artifact cards in your graveyard, target opponent loses the game.

NM - $10.30
LP - $8.30
MP - $6.20
HP - $4.20
DMG - $2.10