Barrier

Erects a magic barrier around yourself, shielding yourself from attacks. You gain 2 stacks of 'Def Up'.'Def Down' causes the creature to receive -1 damage from weapon attack for each stack it has, stacking up to 6 times. All stacks are removed upon exiting combat. When a creature with 'Def Up' would receive stacks of 'Def Down', it will instead lose stacks of 'Def Up equal to the number of 'Def Down' stacks they would receive.