Web of Magical Uh-Oh

A web made of magical energy (think spider-man but magical) that stops the target, they must make saving throw to break free. Upon breaking free the target takes 1d6 damage type of your choosing you must choose damage type before casting. It is possible to throw the webs however the range is 1'-20' roll 1d20 for attack. When used as a trap the web becomes invisible until activated the webs last for 1 min during combat. When not in combat the webs do not deteriorate and you may make as many webs as your DM deems interesting. When setting the webs as traps they will trigger when anything touches them including you. 

At Lv 5 add 1d6 (2d6), Lv 8 add 1d6 (3d6), Lv 11 add 1d6 (4d6), Lv 15 add 1d6 (5d6)