[quote=@Lilygold]
<Snipped quote by Zarkun>

It requires a lot more energy to erase than to push, and without proper practice, the amount of energy used to erase an entire spell could be potentially fatal. Of course, depending on the spell you are trying to erase. In most cases, you have a choice to make: Erase the side effects, not the physical spell, or erase the physical spell but not the full effect. The former takes less energy, and the latter more. However, anything being erased takes a lot out of you, so it's usually more beneficial to push. (This system makes it so that it isn't overpowered unless you have trained so that YOU are overpowered. Answer your question?)
[/quote]

The CS seems fine to me. But the magic does have the potential to become OP, probably at a later date, but would still depend on you and how you use the magic. 

[@Caits] 
What do you think Caits?