Here is a virtually unlimited field which a few powers are developing.

"I almost wish I'd had it so easy when my powers developed."

For a while it seemed as though a new power were developing in that area, but that's all over.

An example of this can be seen in the way Superman's powers developed over the years.

He of course would like to see any latent powers developed.

The power developed two or three months after they started eating native foods.

This power developed from an intense desire to be in two places at once.

The appalling powers they develop change them totally and completely.

Another power usually only developed by a Child of the Millennia.

Our own powers of evaluation develop and we get an 'inner critic'.