Mirrodin Besieged [Modern Horizons] Frog Beast but can mean trouble in

but can mean trouble in large numbers

Transmute {1}{B}{B} ({1}{B}{B}

then put the rest on the bottom of your library in a random order

*Chronicles of the Quarum Plains*

Mirrodin Besieged [Modern Horizons] Frog Beast but can mean trouble inSet: Modern Horizons Type: Enchantment Rarity: Rare Cost: {2}{U} As Mirrodin Besieged enters the battlefield, 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.