Blistercoil Weird

Creature — Weird

Produces: an instant or sorcery untapping.

Cares about: an instant or sorcery being cast.

Partners

140 cards can cause an instant or sorcery being cast.

1. Mission Briefing — When Mission Briefing is cast, Blistercoil Weird gives +1/+1
2. Sorcerous Squall — When Sorcerous Squall is cast, Blistercoil Weird gives +1/+1
3. Kylox, Visionary Inventor — When an instant is cast thanks to Kylox, Visionary Inventor, Blistercoil Weird gives +1/+1
4. Chandra, Acolyte of Flame — When an instant is cast thanks to Chandra, Acolyte of Flame, Blistercoil Weird gives +1/+1
5. Chandra, Flame's Catalyst — When an instant is cast thanks to Chandra, Flame's Catalyst, Blistercoil Weird gives +1/+1
6. Chandra Ablaze — When an instant is cast thanks to Chandra Ablaze, Blistercoil Weird gives +1/+1
7. Jace, Vryn's Prodigy // Jace, Telepath Unbound — When an instant is cast thanks to Jace, Vryn's Prodigy // Jace, Telepath Unbound, Blistercoil Weird gives +1/+1
8. Sword of Once and Future — When an instant is cast thanks to Sword of Once and Future, Blistercoil Weird gives +1/+1

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