Repel Vermin

abjuration

Level: bard 4, cleric 4, druid 4, ranger 3
Casting Time: 1 standard action
Components: V, S, DF
Range: 10 ft.
Area: 10-ft.-radius emanation centered on you
Duration: 10 min./level (D)
Saving Throw: none or Will negates; see text
Spell Resistance: yes

An invisible barrier holds back vermin. A vermin with Hit Dice of less than one-third your level cannot penetrate the barrier.

A vermin with Hit Dice of one-third your level or more can penetrate the barrier if it succeeds on a Will save. Even so, crossing the barrier deals the vermin 2d6 points of damage, and pressing against the barrier causes pain, which deters most vermin.