Negating other powers, magic, and effects. Initially this will only work on powers that are targeting Tim specifically, and he needs to consciously think about nullifying that power, so it will only affect powers and attacks that he is aware of. As it develops and he gains more control, it becomes more instinctual and allows him to almost feel when someone is trying to use a subtle power on him. Further development (levelling up) lets him turn off a person’s powers in a targeted way, individually, or put down a temporary nullifying area anchored to himself or an object.
Negation
This is the attack type power.