With Friends like These

You create a subtle dissonance between creatures, driving them apart. Each target must attempt a Will save.

Critical Success The creature is unaffected.

Success The creature becomes Sickened 1.

Failure The creature becomes Sickened 2. While sickened this way, it doesn't treat any other target of the spell as an ally.

Critical Failure As failure, and it can't end a move action within 10 feet of any other target as long as it is sickened.