Whats to keep some one from phasing a explosive into a body and cancelling the spell? If the target is for instance wearing armor, the grenade would as it is currently written be expelled from the body for a small amount of damage, but be trapped inside the armor. Anypony who knows much about explosives in RL should be able to tell you how bad this would be for the one wearing the armor.

Using a character I currently have with a VER 8 and a POT 8 and one rank of mighty spell TK I can manipulate VER*(POT*2) objects or 128 objects that fit inside of a 16 foot cube. What is to keep the character from collecting say 128 wrecked cars and dropping them on targets as a rain of very heavy debris? Is there a reason so many objects can be handled by TK at one time? Even with a cost of 2 per 10m and 2 per object dropped on the basis of 'dropping' it will constitute an attack, its affordable to and seems overly effective for a given level to simply use large debris in combat. If the objects the character pics up are only 8 at the most in any dimension you could do it for a cost of one per. It just seems that even a non one trick pony can handle an insane number of objects.
