This build is an extremely powerful divine gish with a twist. This build has access to several "I win" buttons between high-DC Implosions, crazy ghost gang summoning, and devcrit.
What this build gives you: full cleric casting with no loss of caster levels and extremely good SR penetration; cleric buffing and healing; 17 pre-epic BAB for 4 attacks/round; 35/40 undead turning; devastating critical at level 24; extremely high save DCs for their spells, particularly evocation (implosion will end up with DCs in the 50s with WIS-boosting gear) and necromancy; heavy armor and tower shields; bonus Death and Evil domains; and the ability to summon up to 8 ghosts at once - the ghosts summoned by this build get ridiculously powerful, becoming epic wizards with epic spells at high levels.
Weak points: only constructs with magic immunity will give this build trouble - it can devcrit or implode anything else; AC on this build is decent due to heavy armor use, tower shields and racial natural armor bonus but is not godly; saves don't really get any notable boosts - be sure to mitigate this shortcoming with the best save-boosting equipment you can find; you have to wait until character level 25 for 7th level spells, 28 for 8th level spells, and 31 for 9th level spells. The ghosts you summon are incredibly powerful but will sometimes turn on you after all the enemies are destroyed (at levels 34, 37, and 40 the ghosts cannot turn if you have gear granting +12 to CHA), it is a good idea to run away before all the enemies are dead and wait for the ghosts duration to expire. If you absolutely want to avoid them turning, you can take the Weapon of Legacy Holy Symbol of Ravenkind, but you will take an attack penalty or the Sunsword which would require you to take bastard sword for the weapon-specific feats.
Build Name: Ghost Whisperer
Race: Half-Ogre
Alignment: Any Evil
Strength 20
Dexterity 6
Constitution 10
Intelligence 12
Wisdom 16
Charisma 14
Lvl Class
1 Cleric 1: Weapon Proficiency (Scimitar), Domains: War, Protection, skill points all into Concentration, Lore, Spellcraft
2 Clr 2
3 Clr 3: Power Attack
4 Clr 4: 17 WIS
5 Clr 5
6 Clr 6: Cleave
7 Clr 7: Spellcraft 10 then no more points into Spellcraft
8 Master of Shrouds 1: 21 STR
9 MoS 2: Spell Focus (Evocation)
10 MoS 3
11 MoS 4
12 MoS 5: Improved Critical (Scimitar/Rapier), 22 STR
13 MoS 6
14 MoS 7
15 MoS 8: Extend Spell
16 MoS 9: 23 STR
17 Hierophant 1: Spell Power +2
18 Hiero 2: Great Cleave, Spell Power +4
19 Hiero 3: Spell Power +6
20 Hiero 4: Spell Power +8, 24 STR
21 Hiero 5: Spell Power +10, Overwhelming Critical (Scimitar/Rapier)
22 MoS 10
23 MoS 11
24 MoS 12: Devastating Critical (Scimitar/Rapier), 25 STR
25 MoS 13: B: Great Wisdom
26 MoS 14
27 MoS 15: Greater Spell Focus (Evocation)
28 MoS 16: B: Epic Spell Focus (Evocation), 18 WIS
29 MoS 17
30 MoS 18: Holy Warrior
31 MoS 19: B: Great Wisdom
32 MoS 20: 20 WIS
33 MoS 21: Improved Turning
34 MoS 22: B: Great Charisma
35 MoS 23
36 MoS 24: Spell Focus (Necromancy), 16 CHA
37 MoS 25: B: Great Wisdom
38 MoS 26
39 MoS 27: Greater Spell Focus (Necromancy)
40 MoS 28: B: Epic Spell Focus (Necromancy), 22 WIS
Spell Suggestions:
- Implosion: instant death to everything, even those things immune to death magic, in a medium-sized area
- Wail of the Banshee: instant death in a huge area (you can spontaneously cast this from the Death bonus domain 1/day)
- Sun Burst: huge damage to undead and permanent blindness to all
- Aura Versus Alignment: protects against some nasty status effects like fear and paralyze
- Hammer of the Gods: a good mid-level battlefield control spell
- Wrack: good low- to mid-level save-or-lose spell
- Sound Burst: good low-level battlefield control spell
- Buffs: the cleric's real strength. Some suggestions, and remember you have Extend Spell to stretch them out: Divine Favor, Righteous Might, Battletide, Prayer, Recitation, Freedom of Movement, True Seeing, Premonition (fate), Mantle of Egregious Might (war)
- Recovery Spells: Heal, Lesser Restoration, Restoration, Greater Restoration, Regeneration
- War Domain Spells: keep one copy of the highest War Domain spell you have available prepared at all times to maximize the damage bonus from Holy Warrior
Note, make sure to buy off the half-ogre level adjustment as soon as you can (level 6 and 9). If you are OK with a high level of cheese (and have level adjustment turned off) you could switch a spell focus feat for Craft Wonderous Items and you would then qualify for the lich template and the demilich template at level 21. The half-ogre model is terrible in the PRC, I recommend this one:
https://neverwintervault.org/project/nwn1/hakpak/original-hakpak/dynamic-ogre-half-ogre