Catalyzed Terrain

Create a zone of protection, enhancement, and binding up to 15 ft wide where yourself and your allies have a natural advantage and your enemies are hindered and have a disadvantage. 
You and your allies in the area have advantage on Dexterity checks and saving throws whilst in the area, and ranged attackers have disadvantage when targeting you or your allies whilst in the area.

Enemies in the area are Slowed, have disadvantage on Dexterity checks and saving throws, and you and your allies have advantage on attacks against them. Enemies in this area cannot teleport or plane-shift nor can they enter the material plane.