Hmm.... It looks like you could use Arcane Strike (feat from CW) and Wraithstrike (spell from Complete Adventurer) with it and then power attack. You could also use the Sculpt Spell feat to make it a 20' burst or a Cone...
Ftr2/Wiz4/Spellblade1/Eldritch Knight2 with Power Attack, Arcane strike, and Sculpt spell:
BAB = 7
Str: 18 (base 14, Belt +4)
3rd level spells.
Free Action: Use Arcane Strike, sacrifice a 3rd level spell = +3 attack, +3d4 damage on each attack.
Swift Action: Cast Wraithstrike. All your melee attacks are touch attacks for one round.
Power Attack for 7.
Cast a Sculped Whirling Blade and throw your +1 Greatsword: +8 melee touch attack on everyone in the area, 2d6+21+3d4 damage to everyone it hits, can crit, no DR, No SR, and no Energy Resistance.
Look possible to you guys, or am I overlooking something? (I'm basing the caster off my roommates character.)