Arcane Resistance

This individual is particularly resistant to magic (including psionics, weird science, etc.), whether by nature or by heritage. He acts as if he had 2 points of Armor when hit by damage-causing arcane powers, and adds +2 to his Trait rolls when resisting opposed powers. Even friendly arcane powers must subtract this modifier to affect the resistant hero.

Improved Arcane Resistance
As above but Armor and resistance are increased to 4.