Acorn of Spike Growth

This Large wooden Acorn allows the user to cast Spike Growth. It comes with 1 charge, and this charge is restored after a long rest.

Spike Growth
Charges: 1
Casting Time: 1 Action
Range/Area: 150 ft. (20 ft. )
Duration: 10 Minutes

The ground in a 20-foot 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 feet it travels.  As a Bonus action, you can end this spell.

The transformation of the ground is camouflaged to look natural. Any creature that can't see the area at the time the spell is cast must make a Wisdom (Perception) check against your spell save DC to recognize the terrain as hazardous before entering it.

Notes: Damage, Control, Utility