Enzymatic Gastrostaff

Alter: This staff was found in the regurgitated remains of a mighty tarrasque's meal and is covered in a strange, magical mucus. You have resistance to acid damage while you hold this staff. The staff can be used as a magic quarterstaff and deal an extra 1d4 acid damage to any target it hits.

In addition, you can use an action to touch a Medium or smaller willing creature with the staff to cast enlarge/reduce spell from it without requiring concentration, targeting the creature with the spell's Enlarge option. While a creature is enlarged in this way, it gains the siege property and gains 1d6+4 temporary hit points at the start of each of its turns, in addition to the spell's normal effects. The effect ends early if the enlarged creature falls to 0 hitpoints. When the effect ends, the creature gains 1 level of exhaustion. Once this property of the staff has been used, it can't be used again until the next dawn.

Attunement: Yes
Rarity: Very Rare
Type: Staff
Cost: 36450gp

Griffons Saddlebag, Vol II