- Consumes a lot of SP, but able to summon all four spirits at once. Costs more SP, but much faster.
- "Here we go,everyone!" - Luka
Quad Spirit Summon is a skill Luka learns near the end of Chapter 3, and is the very last skill he learns throughout the Monster Girl Quest series. Luka first witnesses this skill when Heinrich borrowed his body in the Sealed Sinner's Prison to battle hordes of angels, however he does not gain the ability to use it until the final battle with Ilias, right after Micaela leaves.