Fire Urchin

Creature — Elemental

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, Fire Urchin gives +1/+0
2. Chandra, Flame's Catalyst — When an instant is cast thanks to Chandra, Flame's Catalyst, Fire Urchin gives +1/+0
3. Chandra Ablaze — When an instant is cast thanks to Chandra Ablaze, Fire Urchin gives +1/+0
4. Sword of Once and Future — When an instant is cast thanks to Sword of Once and Future, Fire Urchin gives +1/+0
5. Urabrask // The Great Work — When an instant is cast thanks to Urabrask // The Great Work, Fire Urchin gives +1/+0
6. Festival of Embers — When an instant is cast thanks to Festival of Embers, Fire Urchin gives +1/+0
7. Chandra, Hope's Beacon — When an instant is cast thanks to Chandra, Hope's Beacon, Fire Urchin gives +1/+0
8. Bösium Strip — When an instant is cast thanks to Bösium Strip, Fire Urchin gives +1/+0

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