This is one of the sample builds I'm thinking of putting in my guide.
This build was sort of requested by Ytterbium_Dragon.
Goals of the build: do as much damage as possible using vulnerabilities while putting enemies in a lose-lose situation via divine challenge and arcane ripostes.
I didn't pick encounters or dailies, because they do little to increase (and can even decrease) warlock DPR.
I picked level appropriate gear.
====== Created Using Wizards of the Coast D&D Character Builder ======
sun warlock, level 30
Dragonborn, Warlock, Morninglord, Demigod
Eldritch Blast: Eldritch Blast Constitution
Eldritch Pact: Infernal Pact
Arcane Admixture Damage Type: Arcane Admixture Thunder
Arcane Implement Proficiency: Arcane Implement Proficiency (Staff)
Divine Spark: Divine Spark Constitution
Divine Spark: Divine Spark Charisma
Dragon Breath Key Ability: Dragon Breath Constitution
Dragon Breath Damage Type: Dragon Breath Cold
Arcane Admixture Power: Hellish Rebuke
FINAL ABILITY SCORES
Str 15, Con 28, Dex 15, Int 10, Wis 12, Cha 24.
STARTING ABILITY SCORES
Str 11, Con 18, Dex 13, Int 8, Wis 10, Cha 12.
AC: 43 Fort: 41 Reflex: 37 Will: 40
HP: 185 Surges: 15 Surge Value: 55
Arcana +20, Religion +20, Thievery +22, Intimidate +29, Endurance +29
Acrobatics +17, Bluff +22, Diplomacy +22, Dungeoneering +16, Heal +16, History +17, Insight +16, Nature +16, Perception +16, Stealth +17, Streetwise +22, Athletics +17
Level 1: Armor Proficiency (Chainmail)
Level 2: Arcane Implement Proficiency (staff)
Level 4: Implement Expertise (rod)
Level 6: Draconic Spellcaster
Level 8: Soldier of the Faith
Level 10:Dual Implement Spellcaster
Level 11: Radiant Breath
Level 12: Lasting Frost
Level 14: Called Shot
Level 16: White Lotus Riposte
Level 18: White Lotus Master Riposte
Level 20: Wintertouched
Level 21: Warlock implement expertise
Level 22: Warding Curse
Level 24: Astral Fire
Level 26: Arcane Admixture
Level 28: Echoes of Thunder
Level 30:Weakening Challenge
Warlock utility 2: Fast Hands
Warlock utility 6: Red Leeches of Nihal
Warlock utility 10: Etheral Sidestep
Warlock utility 16: Warp Space
Warlock utility 22: Wings of the Fiend
Rod of the Dragonborn +6, Eladrin Spiritmail +6, Boots of Caiphon (epic tier), Staff of Ruin +6, Symbol of Divine Light +4, Hands of Hadar (epic tier), Razordark Bracers (paragon tier), Cloak+5, Ring of the Radiant Storm (paragon tier), War ring, ankmon's bracers, Siberys Shard of the Mage
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At will teleport of 4 spaces, which is enough to trigger shadowwalk consistently
Hellish rebuke does fire, thunder, cold and radiant damage. It causes cold vulnerability 5 and radiant vulnerability 15.
If needed, boots of caiphon are used to always trigger hellish rebuke secondary damage via a minor action each turn.
To hit: 15 (base)+9 (con)+1 (prime shot)+ 6 (enhancement) +2 (CA)+3 (rod exp)+3(draconic spellcaster)+1 (bloodied)=40 versus 41 reflex= 95% hit ratio
Roll all radiant damage twice and use the better result (ring of the radiant storm)
Primary Damage: 7 (base)+9(con)+12 (enhancement)+6(item)+ 10.5 (curse) +5 (called shot)+5 (cold vulnerability)+15 (radiant vulnerability)+3(astral fire)+3 (echoes of thunder)+7(hands of hadar)+5.5 (Ankmon's Bracers)+5(dragonshard)+4(rolling 7d6+1d10 twice approximation given by Molecule)= 97 average damage
Critical hit damage= 12 (base)+9(con)+12 (enhancement)+6(item)+ 18(curse) +5 (called shot)+5 (cold vulnerability)+15 (radiant vulnerability)+3(astral fire)+3 (echoes of thunder)+12(hands of hadar)+10 (Ankmon's Bracers)+ 21(critical bonus dice)+3.5(war ring)+5(dragonshard)+2.55(rolling 7D6 twice approximation given by Molecule)= 142.05
Secondary Damage: 7 (base)+9(con)+12 (enhancement)+6(item)+ 5 (cold vulnerability)+15 (radiant vulnerability)+3(astral fire)+3 (echoes of thunder)+5(dragonshard)+1.4(rolling 2D6 twice approximation given by Molecule)= 66.4 average damage.
Hellish rebuke DPR= 159.735
95% of the time, the enemy must either take Divine challenge or arcane riposte (9 (con)+15 (radiant vuln)+5 (cold vuln)=29 damage) & master riposte damage (159.33 damage). Assuming they always take the smaller damage, which is divine challenge, they will take 9(base)+6(cha)+15 (radiant vulnerability)=30 damage, they also will be weakened.
Average DPR will be somewhere around 188.235
Defenses are reasonably good once warding curse and shadowwalk are added in (+4 to all defenses). This warlock is also extremely tough, with a good number of hp, a high surge value, and 15 surges.
Mobility is decent, with an at-will teleport of 4 and a speed of 6.
Please let me know if I made mistakes anywhere or could up my dpr somehow.