Futuresight

You can use this once per long rest. It takes you a turn to activate it. Once activated, it lasts for one turn and it makes you take half of any damage, but nullifies any damage that would bring you to 0 HP. Once over, it decreases your strength rolls by 2 and your intelligence and wisdom rolls by 3 for 3 turns.

How many turns it lasts increases at 4th, 8th, 12th, 16th and 20th by 1d2.