Taking extra time on spellcasting

[Mr_Sandman]

The “Time Spent” section in DFRPG Exploits explicitly says it doesn’t apply to spell casting.

In GURPS, besides “Alternate Magic Rituals”, there’s also the optional rule for “Ceremonial Casting” which takes 10 times as long, but allows helpers to contribute to the energy cost, and adding extra energy gives a skill bonus.