Current character is a Dragonborn (lesser Aasimar).
Stats are: Str 15, Dex 14, Con 16, Int 10, Wis 12, Cha 18.
Feats are: Entangling Exhalation, Intimidating Strike.
He is level 5 (Hexblade 4, Cloistered Cleric 1).
He has taken the Dark Companion variant of Hexblade, swapped Knowledge Devotion for the domain from cleric, and carries the Strength and Hatred domains.
He's playing in an arena game. This means that battles are one-on-one, and there is only one battle a day. The arena rules have eliminated stealth and ranged tactics as options, spellcasting is strongly nerfed as well (no ranged spells that do hp or ability damage). ToB, ToM, Dragon material, & online sources are banned.
He's done remarkably well so far, but I'm kind of stuck as to how I'm going to advance him from here on out. I intended the level in cleric as just a dip to grab a couple domains and a free feat (yes, I know that the Strength domain power is crappy, but making sure that I have enlarge person is useful; and one round a day is less crappy when you usually only have 5-10 rounds of combat in a day anyway). Similarly, I'm not sure if continuing Hexblade is great, either (though it may be worth it just to progress the curse. I'm not sure here).
So, I've been looking at PrCs but not seeing much that seems to fit well. Greenstar adept seems good, but it'll take a few levels before he can manage the skill requirements.
Any ideas? A gem I'm missing?