Frozen Grasp

You pull out the water from your water skin with your arcane magic and swirl it around you making a complete ring and let it crash to the floor making it turn to ice and reaching out from you grasping at anything within range.
Any creature standing in the aura range must make a Fortitude save against your CHA. save CL. on a failure, they are Grappled by the feet.
They or another creature can make an Athletics skill check against the same CL. to break them free.
(They have 1 advantage on the skill check if there is a heat source on or within 5ft. from them.)