As an additional cost to cast this spell, sacrifice an artifact.
Create two tapped Powerstone tokens. If the sacrificed artifact was legendary, draw a card. (The tokens are artifacts with ": Add . This mana can't be spent to cast a nonartifact spell.")
As the glowing stone broke apart, so too did the last shred of the brothers' bond.
: Add 
. This mana can't be spent to cast a nonartifact spell.")
