A mage or wizard casting wondrous web would form a physical connection between the receiving and donating item, using their body as a channel. Magic could be drained from potions, arcane scrolls, focal stones, existing magical items or items that have been magically inscribed with rune magic or a command word.
The effects of this spell were a buzzing plexus of white light between the items transferring magical energy. This would continue until the end of wondrous web's duration, whereupon the light and donating magical item would fade away. The power would remain in the receptacle until it was awakened.