In February of 1995, Demona used the spell to summon the souls of Othello, Desdemona, and Iago and revive them as Coldstone. The spell was combined with David Xanatos's science and the dead gargoyle was revived as a cybernetic, re-animated statue. ("Reawakening")
The spell requires an incantation, as well as a powder mixed in a clay vase that is sprinkled into a larger vase and on the corpse, itself. The souls then emerge from the larger vase before entering its former body.