Magic Circle Against Vermin

1st-level abjuration (ritual)

Casting Time: 1 minute

Range: 10 feet

Components: V, S, M (a sprinkling of arsenic)

Duration: 1 hour

You create a 10-foot-radius, 20-foot-tall cylinder of magical energy centered on a point on the ground that you can see within range. The circle affects simple verminous creatures such as rats, bats, mice, lice, fleas, ticks, snakes, and leeches—any beast of CR 1/4 or less—in the following ways:

• The creature can’t willingly enter the cylinder by nonmagical means. If the creature tries to use teleportation or interplanar travel to do so, it must first succeed on a Charisma saving throw.
• The creature has disadvantage on attack rolls against targets within the cylinder.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the duration increases by 1 hour for each slot level above 1st.