🗿 notawikiAcross the Obelisk Codex · the answer, not the article

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item  Equipment · Weapons · Rare
Rarity RareType WeaponsKey stats Insane charges +3
Insane charges +3. [Every turn] Gain 1 Stanza I. Increase the cost of the highest cost Song spell in your hand by 1 until discarded.
Corrupted (purple) version
Insane charges +5. [Every turn] Gain 1 Stanza I, 1 Powerful. Increase the cost of the highest cost Song spell in your hand by 1 until discarded.