Weldfast Wingsmith

Creature — Human Artificer

Produces: nothing.

Cares about: an artifact entering the battlefield.

Partners

1,090 cards can cause an artifact entering the battlefield.

1. Leonardo da Vinci — When a Thopter enters thanks to Leonardo da Vinci, Weldfast Wingsmith grants a keyword
2. Urza's Command — When a Powerstone enters thanks to Urza's Command, Weldfast Wingsmith grants a keyword
3. Spawning Pit — When a Spawn enters thanks to Spawning Pit, Weldfast Wingsmith grants a keyword
4. Basalt Golem — When a Wall enters thanks to Basalt Golem, Weldfast Wingsmith grants a keyword
5. Sai, Master Thopterist — When a Thopter enters thanks to Sai, Master Thopterist, Weldfast Wingsmith grants a keyword
6. Threefold Thunderhulk — When a Gnome enters thanks to Threefold Thunderhulk, Weldfast Wingsmith grants a keyword
7. Castle Doom — When a Robot enters thanks to Castle Doom, Weldfast Wingsmith grants a keyword
8. Simulacrum Synthesizer — When a Construct enters thanks to Simulacrum Synthesizer, Weldfast Wingsmith grants a keyword

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