Darsson's Potion

Magic of Faerûn (Mag)Updated Forgotten Realms (3.0)

Darsson's Potion is a D&D 3.5 spell (Transmutation) from Mag. On class lists for Knight of the Weave (Level 3), Sorcerer (Level 4), Wizard (Level 4), and others. Range or area: Touch; Saving throw: Will negates (object); Duration: 1 hour/level; Casting time: 1 full round.

School
Transmutation
Casting Time
1 full round
Components
V, S
Range
Touch
Target
One flask of water
Duration
1 hour/level
Saving Throw
Will negates (object)
Spell Resistance
Yes (object)

You transform the water in a flask so that it is capable of storing a spell in the manner of a potion.
On your next turn, you or another spellcaster can cast a
spell into the water, transforming the water into a potion of the appropriate type.
Only spells suitable for making potions can be used this way.
The person casting the spell to be stored must spend XP as if a potion were being created with the Brew Potion feat.