Have only looked through it casually so far, but when I looked over the new powers, my eyes caught a few minor things.
Reactive Counterspell should be a Immediate Interrupt. Also I do not get the penalty, but I guess that's subjective. Seems very underwhelming compared to what it does.
Curse of Flesh looks like an attack power, not a utility power (it has an "attack" line after all). Also, the Sustain wording is odd, because what is "this" turn? The caster's? Because that would suck. I am pretty sure it should say: Sustain Minor: You sustain the effect until the end of your next turn. If you want to keep it as an attack utility (i think i just made that up) you should add the implement keyword, to get the proper to hit bonus.
Gabal's: There is something odd about the range/area line. And what the others said about ½ level. Let go of 3.x pretty please with sugar on top.
Wayfarer's Step: Again, something odd with the "range" line. The range in the spell line denotes how far away the guy you teleport can be, not have far you can teleport him. That just has to be in the text.
Enforced Flesh. Level 13 powers are encounter powers, not dailies. Powerwise it seems fine as a encounter power, perhaps even a bit low, since it is not really impressive unless you fight insubstantial monsters.
Cheers
