Just some quick ideas on how some spells may be described.

Possible manifestations of Enlarge:

-         The recipient “hulks out” and then grows calm after reaching full size.

-         The recipient spins so fast it is a blur.

-         The recipient’s parts enlarge enlarge separately, usually from the feet up.

-         A ufo appears and shoots the recipient with an growing ray.

Possible manifestations of Sleep:

-         Silver dust explodes over the targets.

-         Ioun sheep.

-         Ioun teddy bears.

-         The text from a college class passes in front of the targets’ eyes.

-         Abe Simpson appears and starts droning on.

Possible manifestations of Fool’s Gold:

-         A leprechaun paints the metal.

-         Droplets of colored rain fall on the object.

-         An orb of water rusts the object, which then takes the appearance of gold.

-         A mushroom or vine grows over the item and then rots away.

-         The outer surface of the item bulges and writhes before bursting, revealing the new color underneath.

Possible manifestations of Forget:

-         A sap or club strikes the target.

-         Swirling colors appear before the target’s face and a voice tells them to forget.

-         The memories emerge from the target’s head and fade away.

-         Speech in the Primal Tongue tell the target to forget.

-         A key flashes before the target, making them remember where they put their keys but causing them to forget something else.

Possible manifestations of Shatter:

-         A burst of light surrounds the object just before it breaks apart.

-         The object ages and decays.

-         An ooze forces its way out of the object, breaking it from within.

-         Tiny gremlins use picks and/or saws.

-         A massive translucent hammer appears and slams into the object.

Possible manifestations of Anti-magic Shell:

-         Tiny magic spirits float around and break up any spells they come in contact with.

-         Tiny hands form sigils that float in mid air. They make more as the sigils are consumed by contact with spells.

-         A supernatural bell jar is placed over the caster by a Lord of Law.

-         Tiny tigerfish eat any spell they come into contact with.

-         A swarm of tiny stop signs.

Possible manifestations of Fabricate:

-         Chaotic shifting, the raw materials merge into a blob and then become the finished product

-         Light from above appears and the raw materials fuse in an orderly manner.

-         A cloud of darkness envelops the raw materials and fades with the finished product left behind.

-         Phantom tools perform the work.

-         Elemental atoms (Atlas’ Fantasy Bestiary) appear in swarms of all four elements and tear the raw materials apart before putting them into the final configuration.

-         Holy or unholy music plays as the materials fuse into the final form.

-         The earth swallows the raw materials and spits out the finished product.

-         A swarm or flying mirrors appear. Changes occur first in the reflections, reality follows.

-         Fire consumes the raw materials and from the ashes, the finished product emerges.

-         Mad gnomes with golf clubs beat the raw materials into shape.

Possible manifestations of Passwall:

-         Tentacles or roots break apart the wall and hold the fragments out of the way until they rebuild when the spell ends.

-         The wall becomes translucent and phases.

-         Glowing spheres slam into the wall, causing it to recede and illuminate.

-         The wall freezes, then melts or shatters and the fragments become a quivering ooze on the ground.

-         Blood seeps up from the floor and dissolves the wall. When the spell ends, the blood evaporates and the wall rebuilds from the vapors.

-         The wall becomes brain tissue and thinks travelers through.

-         The wall is replaced by a series of revolving doors.

-         Tiny flail snails smash the wall, consume the fragments and then, when the spell ends, explode with the fragments fusing back into place.

Possible manifestations of Regenerate:

-         Spiders swarm the wound and produce silk that transforms into flesh.

-         The wound is covered in mud (which appears as a puddle in the floor if there is no soil nearby) which then transforms into flesh.

- Vines grow over the wound and then become flesh.