Imbue With Wildness [Metamagic]

You have learned how to cause random fluctuations in normal spells.

Prerequisite: At least 2 ranks in Wild Magic, and you have learned and cast at least two different spells with the Wild descriptor.

Benefit: A spell enhanced with this feat gains the Wild descriptor, with all the restrictions and benefits that entails. (For example, any other spell-modifying metamagic feats applied to it become useless.) If the spell already has the Wild descriptor, this feat has no effect on it. A spell imbued with wildness takes up a spell slot one level higher than its actual level.

All or part of this feat is open game content, as described here.