Legendary Artifact — Powerstone
When The Mightstone and Weakstone enters the battlefield, choose one —
• Draw two cards.
• Target creature gets -5/-5 until end of turn.
: Add . This mana can't be spent to cast nonartifact spells.
(Melds with Urza, Lord Protector.)
The Brothers' War (BRO)
Illustrated by: Ryan Pancoast