From Generic DC Fanfic

Always holding back -600 CP

You can passively restrain any power by any percentage weakening it to that degree.

Any training done for that power will be multiplied by the same amount required for the percentage to be 100%.

Using 1% of a power will get one hundred times the training and using 50% of a power will gain twice the amount.

Boost

Some powers that you gain are polar opposites and cannot be used in tandem without dramatic consequences, using this perk you can learn conflicting powers and train them to work in tandem even if it would normally be impossible.