Expressive Firedancer

Creature — Human Sorcerer

Produces: nothing.

Cares about: an instant or sorcery being cast.

Partners

140 cards can cause an instant or sorcery being cast.

1. Chandra, Acolyte of Flame — When an instant is cast thanks to Chandra, Acolyte of Flame, Expressive Firedancer gives +1/+1
2. Chandra, Flame's Catalyst — When an instant is cast thanks to Chandra, Flame's Catalyst, Expressive Firedancer gives +1/+1
3. Chandra Ablaze — When an instant is cast thanks to Chandra Ablaze, Expressive Firedancer gives +1/+1
4. Sword of Once and Future — When an instant is cast thanks to Sword of Once and Future, Expressive Firedancer gives +1/+1
5. Urabrask // The Great Work — When an instant is cast thanks to Urabrask // The Great Work, Expressive Firedancer gives +1/+1
6. Festival of Embers — When an instant is cast thanks to Festival of Embers, Expressive Firedancer gives +1/+1
7. Chandra, Hope's Beacon — When an instant is cast thanks to Chandra, Hope's Beacon, Expressive Firedancer gives +1/+1
8. Bösium Strip — When an instant is cast thanks to Bösium Strip, Expressive Firedancer gives +1/+1

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