Vol Ga Dooga (Japanese: 獣魔吠 Romaji: voru ga dūga) is thought to be a black magic summoning spell. Since its kanjis are the same as those of the Gu Ru Diva spell, it's probably a modification of it.
The spell calls forth a garm, which obeys the commands of the caster.
- ↑ Slayers Special #14, pag. 245