Adapted from Complete Arcane, D&D v3.5

Defenestrating sphere

0-level (Cantrip) Abjuration

A cloudy gray sphere of whirling air and howling winds form around the pearl and flies to attack the caster's ennemies. The caster may use his Move action to move the sphere instead by directing it towards an enemy. If the sphere can reach the enemy, the caster must make a ranged attack roll. Upon hit, the enemy takes 3d6 force damage and must make a Strength saving throw. Upon failure, it is thrown 1d8 x 10 ft into the air in a random direction (roll d6 (hexagons) or d8 (squares) for direction), dropping 1d6 x 5 ft away from its previous position. If there is a cliff, or a window, or something else that is similar nearby, the targets are thrown in that direction. Fall damage functions as normal for this spell ( 1d6 per 10 ft). If the target hits something before reaching maximum height, both the remaining distance it was unable to complete and the fall distance between the object and the ground must be counted for the total fall damage.