You can channel energy to empower your spells.

Prerequisites: Channel Divine Energy, Level 4

Benefit: When you take this feat, choose a metamagic feat that you have. This feat applies only to that metamagic feat. As a free action, you can take the energy from channel divine energy and use it to apply a metamagic feat to divine spells that you know. You must spend one channel divine energy use for each level increase in the metamagic feat you're using. You cannot spend more than half your class level uses this way.