This character won't be murdering anyone though because, again, this build is wildly ineffective. Your damage here is not "solid"-- your level 30 damage here would be weak at level 13. Vast swaths of your feats are spent on defense boosts on a class that's generally already tanky enough with no defense feats but unarmored agility and superior will. Halo of Warding is actively antisynergistic with the Lich aura. The "bait OAs for damage" strategy doesn't work. You don't even have an on-stat MBA to make your opportunity attacks with until level 20, which means you're imagining two full years of play without them.
You also, surprisingly, didn't take expanded crit range, which would have been pretty marginal with the rest of the package but is usually the obvious flashy combo for increased damage on epic avengers!
Overall it appears you just wrote this character for freeform solo roleplay and aren't following any of the encounter design guidelines so, have fun?
You did not show me any damage increasement, other than pointing toward few critical feats.. Which highly depends on roll.. And I am looking for "raw" damage increasement..
And if you talking about Light Blade Mastery feat for expanded critical (19-20), I do not meet prerequisites for it.. (So it is a false recommendation..)(Also, I use melee, but I am not physical martial class that depends on Str and Dex.. I am more Int and Wis, for Arcane and Religion, that fits very well in Lich description.. But "my Lich" just like melee combat, compared to other Lichs..)
And I actually have this for critical hits, this is from Relentless Slayer:
- Lethal Action (11th level): If you spend an action point to make an attack against your oath of enmity target, the attack can score a critical hit on a roll of 18-20.
Necromantic Aura (not Lich Aura) has aura "reach" of 5, so it can work well with Halo of Warding.. Monster that can attack only in "melee" can move only 1 square to activate Halo of Warding, so the monster can indeed activate it while starting in Necromantic Aura area.. So the synergy between the "two" exist.. Example: Monster's Turn - Monster start 3 squares away from PC; monster is under Necromantic Aura; Monster move on a square adjacet to PC and activates Halo of Warding)
Even if Necromantic Aura "reach" is 1 it would still be synergy.. Because Necromantic Aura does take damage to any enemy than starts it turn within Necromantic Aura, but also it deals damage to enemies that moves into Necromantic Aura "area"..
Of course I do not have on-stat MBA before lvl 20.. What for? For some rarely AOO? ..at lvl 20 I get Slayer's Ascendancy, that is why I added it on lvl 20! At lvl 25 come Quicksilver Blade, and later feat Halo of Warding! (..so for you any non AOO based build should take on-stat MBA at beginning?) So I added on-stat MBA when I can use it frequently in combination with other powers/feats.. Before it I just had other priorities..
When I am listening to other suggestions: It is like everyone follow the same way of build! 90% of players taking exact the same feats.. And if you say, I wanna try something.. They will try to stop you and say.. You are doing it wrong, follow the rest! Or if you play PC video games.. All follows the "meta"?
Can you show me "raw damage and attack" increasement with feats.. That is not Avenging Resolution feat.. ?? And of course not changing my Epic way..
You say this is a weak Attack and Damage.. Show me the feat that improves at least one for at least +5? Listening to suggestion! Because you say it is possible!
And by the way, more about damage.. From lvl 14, I regains the use of an expended encounter power, so I can never run out of encounter powers.. Which mean I can basically use encounter power instead of Overwhelming Strike.. And at lvl 20, encounter power as first attack and overwhelming strike as second attack, every single turn