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.

Refraction Elemental

Ward—Pay 2 life.
Whenever you cast a spell, this creature deals 2 damage to each opponent.

The crystal landslide stirred over the shattered forms of the Machine Legion vanguard, and then it rose and rearranged itself into an avenging colossus.