Elf Warlock/Blood Mage/Demigod. Yay, we broke 4E before it even came out.
I haven't been keeping up on my blood mage cheese. What does this do that makes it worth sacrificing the infinite damage from astral weapon? Other than being a better 1 to 30 build, that is.
Level 30 build snapshot for the paladin version:
Elf Paladin / Warlod / Astral Weapon / Demigod
Important Items:
Vorpal anything
Encounter Powers:
Chimera Battlestrike (hits all adjacent enemies, and it's a minor action)
Benign Transposition (gives additional mobility)
Hand of the Gods (minor action makes it easier to spend)
Carving a Path of Light (can't have Pray for More without it)
Pray for More (infinite damage)
Elven Accuracy (auto-hit)
You have to spend all your encounter powers to trigger your trick. That will take two turns, as you have two minor actions and two standard actions needed.
Once you are out of powers, do the following each turn:
Move towards an enemy (move action)
Use Benign Transposition (standard action) to cover the last few squares - recover Chimera Battlestrike
Use Chimera Battlestrike (minor action) to attack all adjacent enemies - recover Elven Accuracy
Use Elven Accuracy (free action) until satisfied with the roll - recover Pray for More
Use Pray For More (free action) and your vorpal weapon until satisfied with damage - recover Elven Accuracy
Repeat last two steps until all your attack rolls have been made - recover Benign Transposition
Wait until your next turn.