Simultaneous Spells are rules describing a special feature of Sorcery in GURPS Sorcery and how it operates differently from Alternative Abilities as they normally work.
Drawback[]
- take a full second to switch .. between attack advantages
- (which would normally be a free action)
Benefit[]
- maintain multiple copies of the same spell
- eg "paying for Complex Illusion once, he can use two “AA slots” to have two separate illusions"