mutagenable slots...

[green_abobo]

mutagenable slots...

here..

http://gaming.stackexchange.com/questions/22669/which-abilities-contain-mutagen-slots

useful, for those interested anyway.

Spoiler

2 in training

3 in magic

3 in swordsmanship

5 in alchemy

13 in total.

 

[jidvei]

Or here http://witcher.wikia.com/wiki/The_Witcher_2_skills#Training_tree

 

[M4xw0lf.978]

Another possibility here: http://witcher.nexusmods.com/mods/9

Mutagens aren't that powerful, i always felt there was way too little use for them, so i play almost all the time with this mod ^^