Alterations are a special class ability for the grim. Alterations modify a grim's transformation by granting various abilities or powers. Alterations only function while the character is Transformed. These abilities supplement the Grim Transformation class ability. An Alteration can only be taken as an Imbued Body if all prerequisite Alterations have been gained as Imbued Bodies. Alteration Types: Alterations come in four basic types: Passive, Burst, Aura and Special. Alterations may have more than one type. Passive Alterations: Grant their function to the grim at all times simply by having them.