[LV1][LV2]
(During the Battle Phase) Each time a spirit you control with Immunity: X would be defeated by a spirit with a color listed in X, that spirit may remain on your Field exhausted instead.
[LV2]
(During the Battle Phase) Each time your opponent plays a spell, negate that effect. Then, remove 2 cores from this nexus. This effect can be applied only once per turn.