[Edit] Persistent Spells

By level 20 you should have about 54 turns. That means you can make 9 spells persistent(EDIT: Since you need Spell LVL Adjustment +1 Turn Attempts for DM you could Persist only 7 Spells). With the appropriate Extend Metamagic rod you can make them last 48 hours, effectively allowing 18 spells persistent.

The following is a short list of spells that can either be persistent or extended such that they last all day:

• Level 1

  • Bless: +1 moral to attack and fear save, 50ft burst

  • Nightshield: +1 saves per 3 levels, stops magic missles

• Level 2

  • Balor Nimbus: 6d6 fire grapple damage

  • Cloud of Knives: Free action to throw 1d6 dagger every round

  • Elation: +2 morale bonus to Str/Dex, +5 movement, 80ft radius

  • Luminous Armor: 5 AC, +4 vs melee

  • Heart of Air: +10 jump, +10 fly, feather fall

• Level 3

  • Footsteps of the Divine: +50 ft.. or fly 40ft

  • Prayer: +1 luck bonus on attack, saves, and skills. -1 foes. 40ft radius.

  • Ring of Blades: 1d6+1 per CL, 5ft radius.

  • Vigor, Mass Lesser: FastHeal1 20ft radius

  • Visage of the Deity, Lesser: +4 CHA, 10/acid/cold/elec resistance

• Level 4

  • Divine Power: BAB of fighter, +6 STR, +1/lvl HP

  • Holy Transformation, Lesser: +2 sacred bonus to Str/Con/saves, 60 fly, darkvision 60

  • Luminous Armor, Greater: 8 AC, +4 vs melee

  • Recitation: +2 luck bonus on attack and AC. 60ft radius.

• Level 5

  • Divine Agility: +10 Dex

  • Righteous Might: +1 Size, +4 Str, +2 Con, +2 Natural, DR/Alignment

  • Righteous Wrath of the Faithful: 30ft radius haste, +3 moral bonus to attacks.

  • Superior Resistance: +6 resistance bonus to saves.

• Level 6

  • <- Need more research ->

• Level 7

  • <- Need more research ->

• Level 8

  • <- Need more research ->

• Level 9

  • <- Need more research ->

[Edit] Highlights

This build can rival a wizard blaster build. At level 20 you are doing 9 EB + 6 HW + 2 Chausuble = 17d6. A wizard will do 20d6 on a regular basis. Now if you get into melee (which you should) you will do 17d6 four times for a whopping 68d6 damage. Both builds can empower, enlarge, and quicken their spells. Wizard gets area of effect spells, but the reflex save offsets this benefit somewhat. The wizard build gets save or die spells, but with an average of 238 hp of damage on a single melee target it gets pertty close to death in a single round.

Besides all the damage you can layout, you have several divine area party buffs.

Your armor class should be in the general range of a typical Fighter. At level 9 you can fly which is a huge advantage. Ranged attacks typically do less damage than melee attacks. Just hover 10ft above the battlefield, you still have an effective 15 reach. Indoors not as effective.

• Eldritch Glaive + Divine Power gives you multiple attacks per round. If enlarged your reach is 20ft. The eldritch glaive last 1 full round so you can make attacks of opportunities with it.

• The Travel Devotation feat allows you to move and cast Eldritch Glaive.

• The Naberius visage from the Binder class grants Faster Ability Healing. This means you can use your Hellfire Warlock abilities and heal the CON damage 1 round later. Consider making your CON an odd number to avoid paperwork headaches with your HPs.

• This build uses divine metamagic to power persistent spells. Six turns gets you one 24hour spell. Seven turns gets you one 48 hour spell. So seven turns per day will persist two spells (alternate days). You can use a Metamagic Extend wand instead of the extra turn.

• The Destory Undead (alternate cleric class option) combined with Turn Undead (from Sacred Exorcist) will double the number of turns you can use for divine metamagic. If your DM disallows this then you may want to drop Sacred Exorcist for earlier entry into Hellfire Warlock, then add another prestiege class on at level 20.