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

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item  Equipment · Weapons · Rare
Rarity RareType WeaponsKey stats All damage +1. Poison charges +1. Immune to: Disarm
All damage +1. Poison charges +1. Immune to: Disarm. [Every turn] Apply 3 Poison, 1 Rust to a random monster.
Corrupted (purple) version
All damage +2. Poison charges +2. Immune to: Disarm. [Every turn] Apply 5 Poison, 1 Rust to a random monster.