Thank you for replie :)
Now i have new question...
So i found this build online (and put some on it), but I cant comperhand my head around its math:
Traits:
Magical knack
Signature spell (animate dead)
>>{Q1} to wich class/es we count this Caster level?
Lvl 1-4 oracle juju, we can controll 6hd per lvl. We will take 2 feats here, spell specialization and mages tatto. This should net us additional 3 caster levels for animate dead.>>{Q2} at lvl 20, where do we calculate this caster levels?
Lvl 5-7 wizzard, we can controll 4hd only per caster level
Lvl 8-15 mystic theurge, and at 15 we are taking spell perfection, now this shoul net us 6hd+4hd per MT level, and additional 3 caster levels.
Lvlv 16-20 agent of grave, progressing on oracle, for 5x 12hd.
Now I am not sure, where do we calculate in all those feats and bonuses, are you selecting every level where to apply them, can you use for more caster lvls?