Items with Reactive have a chance to cast spells when swung. The spell on the Spell Parchment determines the spell that will be inscribed on the item.

Ars Nouveau – Reactive 1

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Like other enchantments, Reactive levels can only be applied to an item with the previous level of enchantment. Reactive 2 requires Reactive 1, etc.

Ars Nouveau – Reactive 4

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The spell inscribed for Reactive can be changed by placing the item in the apparatus with a new inscribed spell parchment.