Erebonian Civil War

As Erebonian Civil War enters the battlefield,
choose Noble Alliance or Imperial Resistance.
• Noble Alliance — Whenever you cast an
artifact spell, create a 1/1 colorless Myr artifact creature token.
• Imperial Resistance — 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.