True Shield

A sphere of energy erupts from you, encasing and protecting you. Until the end of your next turn, the shield absorbs up to 50 damage that you would've taken before shattering, including the triggering attack, spell, or effect, leaving you unharmed. Line effects and spells, such as lightning bolt and some dragon's breaths, stop completely at the sphere if the damage is entirely absorbed. The shield reflects a magic missile spell bakc to the caster, using its spellcasting ability, instead of absorbing the damage.