In this kind of battle, the ur-viles could not focus their power effectively.

They focused their power to boil the frozen tree inside and make it explode.

But then you'd think that when you went for it, they would have immediately focused all their power on you.

Focusing his power, he swept the black liquid away.

Lighting the candles is simply a matter of focusing your mind's power on their wicks.

Concentrating her Talent she focused all her power on the whispers.

To loose the compulsion-could she touch them, then focus her power on breaking the call of the Voice?

"They can't heal, but they can focus your psychic power."

He focused his power, and the door burst open, shattering the lock.

Some even have the ability to consciously focus their power.