Spell Engine

Abjuration [Force]
Level: Wizard 8
Components: V, S, M, XP
Casting Time: 10 minutes
Range: Close (25 ft. + 5 ft./2 levels)
Effect: 5-ft.-radius magical wheel
Duration: See text
Saving Throw: None
Spell Resistance: Yes; see text

You speak a word of abjuration and thrust aloft the bone disk and silver wheel, held together by a single tear. The disk and wheel begin to spin, then vanish, but you feel the power of the mystic engine created nearby.

Upon casting this spell, you can swap out any or all of your prepared spells for other spells from your spellbook. Each prepared spell must be swapped for a spell of the same level. Empty spell slots from a spell cast earlier in the day (including the casting of this spell) cannot be refreshed. Preparing spells within the light provided by a spell engine takes only half as long as normal.

Material Components: A disk of polished bone, one of your tears, and a silver wheel worth 500 gp.

XP Cost: 250 XP.