Shadow Magic

The shadow magic spell enables the wizard to tap energy from the Shadow plane to cast a quasi-real wizard evocation spell of 3rd level or less. For example, this spell can be Magic Missile, Fireball, Lightning Bolt, or so on, and has normal effects upon creatures in the area of effect if they fail their saving throws vs. spell. Thus a creature failing to save against a shadow magic fireball must roll another saving throw, suffering half of the normal fireball damage if successful and full normal fireball damage if the saving throw is failed. If the first saving throw was successful, the shadow magic nature is detected and only 20% of the rolled damage is received (rounding down below fractions below .4 and rounding up fractions of .4 and above).

[Player's Handbook]

School: Illusion/Phantasm
Level: 5
Rarity: Common

Range: 50 yards + 10 yards/level
Components: V, S
Duration: Special
Casting Time: 5
Area of Effect: Special
Saving Throw: Special