Help me making a 12th-level Dwarven Avenger with Big Axe

[Shin Okada]

I am to attend as a PC for Revenge of the Giants campaign and thus must create a 12th-level PC.
The basic regulation will be "books only". So no Dungeon or Dragon stuffs.

Before someone suggest other type of characters, I must describe that my primal goal is to use the following mini as a PC in DnD Game.

So, an avenger with Execution Axe is ideal.

I made him into a Radiant Servant as it will make him score critical often, and his Vicious Execution Axe will do good job.
His melee basic attack and 1[W] Weapon powers will be +17 vs AC and 1d12+13 (5d12+25) brutal. Or +15 vs AC and 6 more damages with Power Attack. And anything except his melee basic attack will crit on 19-20.
But making him into usual Avenger and giving him Jagged Weapon could be another choice.

My current biggest concern is, as I only chose powers with Radiant keyword, his Encounters may be sub-per.
Maybe I can change his deity to Pelor for taking Solar Enemy. But flavor-wise, I want to make him a worshiper of Moradin who hunts down giants and their kins.

Would you please optimize this build and give some advice?
But remember, I want to use that mini. So do not suggest me to change his weapon into crusader Mordenclad or something.

Dwarf Avenger (Censure of Unity) 12/Radiant Servant
Alignment: LG Deity: Moradin
Language: Common, Dwarven, Abyssal, Giant, Primordial
Str 15, Con 16, Dex 9, Int 17, Wis 21, Cha 11
AC: 25 (10 +6 level, +3 Int, +3 Shield of Faith, +3 Enhancement)
Fort: 23 (10 +6 level, +3 Con, +1 Avenger, +3 Enhancement)
Reflex: 23 (10 +6 level, +3 Int, +1 Avenger, +3 Enhancement)
Will: 27 (10 +6 level, +5 Wis, +1 Avenger, +2 Armor, +3 Enhancement)
HP: 96, Bloodied: 48, Healing Surge Value: 24, Healing Surge per Day: 10
Speed: 5
Initiative: +5
Trained Skills: Arcane +14, Athletics +13, Perception +16, Religion +9
Feats: Divine Distraction, Dwarven Weapon Training, Initiate of the Faith, Linguist, Melee Training (Wisdom), Nimbus of Light, Power Attack, Versatile Expertise (Axe, Holy Symbol)

1st-level At-Will: Bond of Censure, Bond of Retribution

1st-level Encounter: Avenging Echo
1st-level Encounter: Speed and Stillness (instead of 3rd-level encounter)
7th-level Encounter: Excoriating Call
11th-level Encounter: Solar Wrath

1st-level Daily: Temple of Light
5th-level Daily: Dawn Fire Sigil
9th-level Daily: Glyph of Agony

2nd-level Utility: Refocus Enmity
6th-level Utility: Aspect of Agility
10th-level Utility: Wings of Vengeance
12th-level Utility: Healing Sun

Magic Items: +3 Vicious Execution Axe, +3 Githweave Cloth Armor, +3 Amulet of Protection, +3 Holy Symbol, L6 Iron Armbands of Power, L3 Syberys Shard of Radiance

Edit: If you can think of completely different build to represent this mini, that will be welcomed, too.

 

[Shin Okada]

And here is my second plan. Now his 1[W] attack deal 1 less damage (1d12+12) on hit and much less damage on critical (2d12+24 and ongoing 10 damage). But his melee basic attack also crit at 19-20 and he seems to have better encounter and daily attack powers, I guess.

Dwarf Avenger (Censure of Unity) 12/Relentless Slayer (Fire Giant)
Alignment: LG Deity: Moradin
Language: Common, Dwarven, Abyssal, Giant, Primordial
Str 15, Con 16, Dex 9, Int 17, Wis 21, Cha 11
AC: 25 (10 +6 level, +3 Int, +3 Shield of Faith, +3 Enhancement)
Fort: 23 (10 +6 level, +3 Con, +1 Avenger, +3 Enhancement)
Reflex: 23 (10 +6 level, +3 Int, +1 Avenger, +3 Enhancement)
Will: 27 (10 +6 level, +5 Wis, +1 Avenger, +2 Armor, +3 Enhancement)
HP: 96, Bloodied: 48, Healing Surge Value: 28, Healing Surge per Day: 13
Speed: 5
Initiative: +5
Trained Skills: Arcane +14, Athletics +13, Perception +16, Religion +9
Feats: Divine Distraction, Dodge Giants, Dwarven Durability, Dwarven Weapon Training, Linguist, Melee Training (Wisdom), Power Attack, Versatile Expertise (Axe, Holy Symbol)

1st-level At-Will: Bond of Censure, Overwhelming Strike

1st-level Encounter: Pass at Arms
3rd-level Encounter: Fury's Advance
7th-level Encounter: Dismiss the Unworthy
11th-level Encounter: Slayer's Gambit

1st-level Daily: Strength of Many
5th-level Daily: Menacing Presence
9th-level Daily: Enduring Strike

2nd-level Utility: Refocus Enmity
6th-level Utility: Aspect of Agility
10th-level Utility: Wings of Vengeance
12th-level Utility: Relentless Fervor

Magic Items: +3 Jagged Execution Axe, +3 Holy Symbol, +3 Githweave Cloth Armor, L6 Iron Armbands of Power, Acrobat Boots, L4 Gauntlets of Blood, Circlet of Second Chances, +3 Amulet of Protection, Belt of Vigor

Edit: If you can think of completely different build to represent this mini, that will be welcomed, too.

 

[Herschel]

Flavor-wise, I like the second build better. For at-wills, I really like Leading Strike that gives my ally a damage bonus. That's a nice incentive to keep teh defender with me, helping to make sure only one enemy can get adjacent to me to keep my oath roll going.