Iron Mind

The person or creature affected by iron mind is immune to all charm and hold spells for a full hour. Additionally, he automatically disbelieves all illusions cast by 3rd-leveI wizards (or their equivalent) or lower.

[Complete Wizard's Handbook]

School: Abjuration
Level: 3
Rarity:
Abjurers - Common;
Others - Very Rare

Range: Touch
Components: S, M
Duration: 1 hour
Casting Time: 3
Area of Effect: One creature
Saving Throw: None

Material Components:
a small chunk of iron ore or any small item made of solid iron, such as a nail