Spike Growth

Casting Time: 1 action
Range: 150 feet
Duration: Concentration, up to 10 minutes
The ground in a 20-ft. radius centered on a point within range twists and sprouts hard spikes and
thorns. The area becomes difficult terrain for the duration. When a creature moves into or within
the area, it takes 2d4 piercing damage for every 5
ft. it travels.
See PHB, pg. 277.