I made an Avenger + Student of Caiphon (+ a Radiant melee weapon) + Twin Strike for extra brokenness.
He's actually not bad(I tried to make him more balanced than op). At level 16 he has 117hp, +14 init, 32/28/28/28 for defenses and Twin Strike against his oath target is +20/+20, 1d10+10/1d10+9 damage. Crit with main hand of course gives an off-hand attack.
The math on 18-20 crit range with 2d20 rolls is about a 28% crit chance per attack. Twin-strike makes that a 47% crit chance per round(if I remember correctly, haven't opened this guy in a few months).
[sblock]====== Created Using Wizards of the Coast D&D Character Builder ======
Lord Priest Syphos the Terrible, level 16
Half-Elf, Avenger, Student of Caiphon
Avenger's Censure: Censure of Pursuit
Pact Initiate: Pact Initiate (star pact)
FINAL ABILITY SCORES
Str 20, Con 13, Dex 14, Int 9, Wis 20, Cha 14.
STARTING ABILITY SCORES
Str 16, Con 10, Dex 13, Int 8, Wis 16, Cha 11.
AC: 33 Fort: 28 Reflex: 28 Will: 28
HP: 117 Surges: 8 Surge Value: 29
TRAINED SKILLS
Religion +12, Athletics +18, Stealth +15, Perception +18, Bluff +15
UNTRAINED SKILLS
Acrobatics +10, Arcana +7, Diplomacy +12, Dungeoneering +13, Endurance +9, Heal +13, History +7, Insight +15, Intimidate +11, Nature +13, Streetwise +10, Thievery +10
FEATS
Level 1: Weapon Proficiency (Double axe)
Level 2: Armor Proficiency (Leather)
Level 4: Weapon Focus (Axe)
Level 6: Weapon Expertise (Axe)
Level 8: Improved Armor of Faith
Level 10: Two-Weapon Fighting
Level 11: Pact Initiate
Level 12: Versatile Master
Level 14: Two-Weapon Opening
Level 16: Two-Weapon Defense
POWERS
Avenger at-will 1: Radiant Vengeance
Avenger at-will 1: Bond of Pursuit
Dilettante: Twin Strike
Avenger encounter 1: Whirlwind Charge
Avenger daily 1: Aspect of Might
Avenger utility 2: Distracting Flare
Avenger encounter 3: Deadly Stride
Avenger daily 5: Nine Souls of Wrath
Avenger utility 6: Soul Seeker
Avenger encounter 7: Inexorable Pursuit
Avenger daily 9: Glyph of Agony
Avenger utility 10: River of Life
Avenger encounter 13: Weaving Blades (replaces Whirlwind Charge)
Avenger daily 15: Aspect of Fury (replaces Nine Souls of Wrath)
Avenger utility 16: Avenger's Resolve
ITEMS
Radiant Double axe +3, Boots of the Fencing Master (heroic tier), Solitaire (Cinnabar) (heroic tier), Amulet of Protection +4, Feytouched Snakeskin Armor +4, Magic Holy Symbol +3, Rod of Time Distortion +2, Viper Belt (heroic tier), Diamond Bracers (heroic tier), Skull Mask (heroic tier), Hedge Wizard's Gloves (heroic tier), Quickcurse Rod +1
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