Editing Creating Magical Effects (section)

==Simultaneous Effects==

You can cast only one Effect in a turn.Even with Time magic, you are limited to channeling only so much magical energy. If you want to do multiple things at once, you will probably have to build a conjunctional Effect,if your game uses that optional rule.

However, some Effects have a duration, especially if you use the grades of success mechanic from performing rituals or using Willpower (see the optional rules on p. 138). If you have an Effect running already, it takes some of your concentration and makes casting other Effects difficult.

Performing any Effect that requires full concentration, like controlling weather with constant changes, precludes you from doing anything else. All of your attention is occupied on the spell. Even with Mind multi-tasking, you can’t divert your magical will to another feat.

Any other Effect typically requires a little magical will to sustain, but it’s not too taxing. For every two full Effects of this sort that you have running, you take a one-Trait penalty on all new casting challenges, because you’re slightly distracted. Therefore, you might keep up a Forces shield without difficulty, but if you also add on the Better Body rote, then you’ll suffer a one-Trait penalty to all additional Effects that you weave.