Painsmith

Creature — Human Artificer

Produces: nothing.

Cares about: an artifact being cast.

Partners

87 cards can cause an artifact being cast.

1. Author of Shadows — When Author of Shadows is cast, Painsmith gives +2/+0
2. Tinybones, the Pickpocket — When Tinybones, the Pickpocket is cast, Painsmith gives +2/+0
3. Elemental Time Flamingo — When a creature is cast thanks to Elemental Time Flamingo, Painsmith gives +2/+0
4. Anrakyr the Traveller — When Anrakyr the Traveller is cast, Painsmith gives +2/+0
5. Black Widow, Super Spy — When Black Widow, Super Spy is cast, Painsmith gives +2/+0
6. Sarevok's Tome — When Sarevok's Tome is cast, Painsmith gives +2/+0
7. Serpent's Soul-Jar — When Serpent's Soul-Jar is cast, Painsmith gives +2/+0
8. Knowledge Pool — When Knowledge Pool is cast, Painsmith gives +2/+0

7 other cards cause it too, equally specific. The ones shown are the best connected.