Nifft
Penguin Herder
AoE effects are awesome.I'm not certain it's optimal, but for Living Eberron, I chose Burning Spray for my Fey Warlock as the Half-Elf Dilettante power.
IMHO, Fey Pact Warlocks suffer from a lack of melee & close attacks. So I'd consider taking one of the Paladin or Bard melee powers (e.g. Virtuous Strike).
Cheers, -- N