[QUOTE=sithari]ok. i'm going to research this ritual i need some help for balance...
Sorcerer True Ritual
lvl:6
casting time:2days
casters:3
xp cost:3000
material cost:20000
By casting this 2day long ritual on of the casters must permanetly loose one 6th lvl spell slot and have to choose 2 metamagic feats.From that point he casts spells altered by these feats with no increasement to the casting time.[/QUOTE]
This doesn't make much sense. Firstly, you need to start using the correct conventions when laying out the spell - I know that sounds petty, but it helps the rest of us understand your ideas a little better.
Anyway. Reading through this raises the following questions:
1) Do all 3 casters lose 3000 xp?
2) Does each casting of the spell cost 20000 gp (so, 60k in total? Why would those not getting the benefits of the spell do this)?
3) Which one of the casters gains the benefit of this spell (and why would the others help them, since they gain no benefit)?
4) If you lose a 6th level spell (which really doesn't make any sense at all - I mean, where does it go? Is a part of your brain destroyed upon casting

?) is this a spell slot or spells known?
5) Since this spell says
Sorcerer does this exclude any other arcane casters from casting it (whether its beneficial for them do so or not)?
Another point, where do all the numbers come from? 2 days casting? 20000 gp cost (on what? Or do the sorcerers just dance around a pile of cash until it just vanishes

)? 3000 xp cost? 3 casters? There seems to be an entirely random element to this. But maybe I'm just missing something?
So, what would I do? Well, as it stands, its broken - very overpowered. If you really wanted to run with something like this, then I'd drop the permanent tag, give it a range of personal (so, only one caster involved!), have it affect only one metamagic feat (chosen at time of casting), give it a duration of 1 round/level and a casting time of 1 full round. I'd also drop the xp penalty, but maintain a high cost material component (not sure what, off the top of my head). Oh, and set the spell level to 7th or 8th.
I still probably wouldn't allow it (in the hands of a sorcerer, it'd still be quite potent), but at least it's more balanced (IMO!).