Bramble Barrier

You create a line of low brambles that erupts from a point you can see within range. This line is 30 feet long and 5 feet wide, made of up of six 5-foot squares of brambles. Each patch much connect to another patch and be placed on the ground. The bramble patches are difficult terrain and a creature that enters a square of brambles takes 4d4 piecing damage and must make a Constitution saving throw. On failure, their speed becomes 0 until the end of their turn.

The brambles wither and die after 1 day if the area isn't suitable for them to grow. Each 5-foot-square portion of brambles requires at least 1 minute to clear by hand, or can be cleared if they take 5 or more fire damage. The brambles crumble to dust immediately if you cast this spell again.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, you can create two additional 5-foot squares of brambles for each slot level above 3rd.