CardName: Forgers Hammer
Cost: 2
Type: Artifact - Equipment
Pow/Tgh: /
Rules Text: Equipped creature has "{r}, {t}: add {r}{r}{r} to your mana
pool. Use this mana only to cast equipment spells."
Equip {3}
Flavour Text:
Set/Rarity: Comic Book Set Common
Forgers Hammer
C
Artifact – Equipment
Equipped creature has ", : add to your mana pool. Use this mana only to cast equipment spells."
Equip
Maybe branch this out a little and let it effect all artifacts?
I don't think this is common.