Magic Circle

Casting Time: 1 minute
Range: 10 feet
Components: V, S, M (holy water or powdered
silver and iron worth at least 100 gp, which the
spell consumes)
Duration: 1 hour
You create a 10-foot-radius, 20-foot-tall cylinder
of magical energy that protects the area from extraplanar or undead creatures.
See PHB, pg. 256.