Mirrodin Besieged (Modern Horizons)

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 - $6.50
LP - $5.50
MP - $4.00
HP - $3.00
DMG - $1.50