Upper_Krust said:
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I understand the mechanic, but (like a lot of things), its the explanation that is tricky.
I am sure a few things need tweaked. Astro Effect (to name but one) is totally wrong.
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Anti-Matter [Effect] Sounds like it either A - damages the foe with dice of their HD size, or B - Uses their HD as the rate of which a certain ammount of damage is dealt (Possibly also including idea A

)
As for astro... An example Demiurge or whatever, even with 320 HD, has an 80% chance to kill his or her foe with each hit from a ray... (Granted a stage 1 demiurge can't take it 4 times normally, but the math is still there)
Perhaps .1% times HD? Time Lords of 1000 HD then would have a 100% chance... Or .05%, but then a stage 1 demiurge taking it just once has a 4% chance...
There is no simple math for this.

(Maybe a cap of % at some point? Is there a bonus to having a % higher than 100? or is it just "I kill you so bad, your alternate dimention twins are gonna feel it!" )
I think the Omega effect is the most broken right now. As it is written, it has a good shot of auto-killing any foe of equal HD, even if taken once or twice it is crippling. (1d4 levels annihilated per level? Mathematically, this wins almost any fight)
Oh, and something I must note - In a couple situations (rulings/details dependant) Polymath is better than Omniparity.
I do not believe Epic feats due to epic levels in base classes are "Class Features" but with Polymath, you get to freely swap them in and out in any combination you like, while it seems with Omniparity, you just get the powers of all the other classes.
Granted, you need Polymath to take Omniparity in the first place.
Oh do either of the classes take Prestige Classes into account? That makes Omniparity really good then

(And by really good, I mean insanely powerful, and confusing

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