Invasion of Karsus // Refraction Elemental
Invasion of Karsus
(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)
When this Siege enters, it deals 3 damage to each creature and each planeswalker.
Battles Matter Board Wipes Burn Elemental Kindred Interaction Protective Effects Spells Matter Spellslinger Transform Ward