Magic is stored in the brain

[boy2mantwicethefam]

Partially reverts #35943

As fun as it is to have all the spells stored in the ass it led to several problems:

• It made it somewhat more difficult to handle spells code-wise
• It only really affected humanoids, and any other mob that didn't have a butt could cast spells just fine
• Prevented wizborgs from existing, which was probably one of the more important incentives the wizards had for accepting the borgification instead of going catatonic

:cl:

• tweak: Magic is now stored in the brain, not the ass, which should also allow wizardly silicons to be made again.

[Eneocho]

Make magic stored in the brain AND the ass, you need both. No ass, no magic casting, unless you turn into something that can't have an ass.

[hacker-on-steroids]

the wizard incentive for borging is being in an MMI and still able to cast fireballs, killing anyone that picks you up instantly