Celestial Bulwark (10th level)

A glimmering shield of glass adorned with stardust appears above your head. The air and ground around you begin to ripple, turning a deep purple dotted with streaks of colour, fading as quickly as they appear. Every movement you make seems preordained, with infinite grace. Any creature within 100 feet of you considered hostile is now on difficult terrain. This effect cannot be denied. You may stand upon the very air, deep within water or within the space of another creature without provoking opportunity attacks. You may teleport up to 300 feet anywhere instead of moving during your turn. You no longer provoke opportunity attacks. Your AC is increased by 5 or to a minimum of 18. The shield has a pool of hitpoints equal to your total HP. The shield will take damage for you untill it is broken, bending time and space to absorb the damage taken no matter what. Any creature making an attack against you must make a constitution saving throw or take force damage equal to 1D4 times X where X is the total amount of damage dealt. Whichever attack breaks the aegis is completely nullified, and the damage towards the attacker cannot be avoided