A friend of mine is about to start his own 4e campaign, and I'll be playing a Sorcerer. I need your advice on how to build him the way I want him, though:
I want my Sorcerer to focus on debuffing enemies or placing debilitating conditions. He should do stuff like lowering their defences, knocking them prone, or making them dazed or immobilised. I don't mind not being able to deal high amounts of damage.
I would strongly prefer to play a Human, Tiefling or Half-Elf, and to use the Arcane Wellspring Paragon Path.
How can I build this Sorcerer? What race, powers and so on should I use?