Area Effect 3: All champions within the affected area take 10 physical damage. Shrines and relics take half damage. The owner of this spell gains nora equal to half the damage dealt by this spell.
Thorn collection used to cost 25 nora, but increased in price.
Thorn collection is craftable from Polymorph, which is no longer available in packs. Thus Thorn Collection is limited.
Thorn Collection's refund makes it perfect to cast several Area Damage Spells at the same position, being ussually the first two thorn collections and then a finishing additional spell. In KF/IS splits, it makes a exellent combo with the spell strip armor