Powerstone Shard 
Artifact
"Light passing through a powerstone is refracted by eternity and colored by planar energy. I wonder how the world appeared through Urza's eyes?" — Teferi
Artist:
Lindsey LookShare:
Text:
: Add {C} for each artifact you control named Powerstone Shard.
Rulings:
- 4/27/2018 Powerstone Shard’s activated ability is a mana ability. It doesn’t use the stack and can’t be responded to.
Legality:
- standard: Not legal
- future: Not legal
- frontier: Legal
- modern: Legal
- legacy: Legal
- pauper: Legal
- vintage: Legal
- penny: Legal
- commander: Legal
- 1v1: Legal
- duel: Legal
- brawl: Not legal
- oldschool: Not legal
- historic: Legal
- pioneer: Legal
- gladiator: Legal
- premodern: Not legal
- historicbrawl: Legal
- paupercommander: Legal
- alchemy: Not legal
- explorer: Legal
- predh: Not legal
- oathbreaker: Legal
