More blaster defender. By 11th, typically doesn't do weapon attacks unless that's the only option. Here's what the build possibly looks like at 14th and there's a feat that needs editing because I have two damage feats that don't stack with each other. This is in a campaign that typically only has 2 combats per session - so the PC has 3 uses of Ardent Vow per combat at 14th-20th. And the campaign hands out a free feat at 1st/11th for feat bonuses to attack/defenses.
At 8th, here's what Astral Thunder does as an example with a wrath of the gods+ardent vow: 2d8+23. Average of 32 damage. Add +1d6 if target is marked. So does some big boom 5/day at 8th.
====== Created Using Wizards of the Coast D&D Character Builder ======
Mirrakkah, level 14
Deva, Paladin, Traveler's Harlequin
Binding Initiate Option: Binding Initiate (Fey Pact)
Auspicious Birth (Auspicious Birth Benefit)
Theme: Cipher
FINAL ABILITY SCORES
STR 13, CON 9, DEX 13, INT 11, WIS 22, CHA 22
STARTING ABILITY SCORES
STR 12, CON 8, DEX 12, INT 10, WIS 16, CHA 16
AC: 32 Fort: 22 Ref: 24 Will: 30
HP: 115 Surges: 9 Surge Value: 28
TRAINED SKILLS
Bluff +18, Diplomacy +18, Dungeoneering +18, Insight +18, Intimidate +18, Perception +18, Religion +14
UNTRAINED SKILLS
Acrobatics +6, Arcana +7, Athletics +6, Endurance +2, Heal +13, History +9, Nature +13, Stealth +4, Streetwise +13, Thievery +4
POWERS
Basic Attack: Melee Basic Attack
Basic Attack: Ranged Basic Attack
Deva Racial Power: Memory of a Thousand Lifetimes
Paladin Feature: Divine Mettle
Paladin Feature: Divine Strength
Paladin Feature: Divine Challenge
Paladin Feature: Ardent Vow
Bard Feature: Majestic Word
Monk Feature: Centered Flurry of Blows
Warlock Attack: Fascinating Shadows
Warlock Utility: Cloud Sight
Paladin Attack 1: Virtuous Strike
Paladin Attack 1: Ardent Strike
Paladin Attack 1: Frost of Letherna
Paladin Utility 2: Call of Challenge
Bard Attack 3: Ballad of the Zombie King
Paladin Attack 5: Hallowed Circle
Paladin Utility 6: Wrath of the Gods
Monk Utility 6: Quicksilver Motion
Paladin Attack 7: Astral Thunder
Paladin Attack 9: One Stands Alone
Traveler's Harlequin Attack 11: Traveler's Mummery
Traveler's Harlequin Utility 12: Shape of the Traveler
Paladin Attack 13: Letherna's Hounds
FEATS
Level 1: Devout Protector Expertise
Level 1: Battle Intuition
Level 2: Bardic Dilettante
Level 4: Novice Power
Level 6: Implement Focus (Holy Symbol)
Level 8: Superior Implement Training (Accurate symbol)
Level 10: Acolyte Power
Level 11: Fluid Motion
Level 11: Monastic Disciple
Level 12: Binding Initiate
Level 13: Superior Will
Level 14: Fiery Blood
ITEMS
Heavy Shield x1
Iron Armbands of Power (heroic tier) x1
Siberys Shard of Radiance (heroic tier)
Vanguard Longsword +1 x1
Burning Gauntlets (heroic tier) x1
Javelin
Ring of the Dragonborn Emperor x1
Accurate symbol of Fire and Fury +3 x1
Magic Plate Armor +3 x1
Amulet of Protection +3 x1
Circlet of Arkhosia (paragon tier)
====== End ======