[Fern]

Black Xyston isn't a compatible casting tool for Lift Off from Firebird, which states that Spears can be valid casting tools. For reference, Black Xyston is the dual type Sword/Polearm weapon. This might also be a problem with the other dual type weapons and spells that can use other casting tools besides Tomes.

How to reproduce:
1. Use a Black Xyston
2. Cast Lift Off and find out it's not a valid casting tool despite counting as a Spear/Polearm.