Well of drowning

Can cast a well of water in a 10 foot cube, 10 feet high, 5 times per long rest. if an enemy is in the well as it is cast, it must make a DC18 DEX save or be trapped inside the well. If an enemy starts its turn in the wall it must make a DC18 DEX save or it is stuck inside the well.WHile in the well,  you make a DC18 CON saving throw. If the throw succeeds, you are grappled and can not move until your next turn. If the throw fails, your lungs fill with water and you incapacitated. Your health remains the same but are still trapped until you are pulled out of the well or the spell ends. If you start your turn incapacitated in the well, your health goes to 0 and you begin making death saving throws on your turn. If you start your turn at 0 health points inside the well, you are dead and can only be revived by a spell that does so. Any attacks made from the well are at Dis Adv as well as ranged attacks through the well.