[LV1][LV2] When your opponent removes a Cost 2/4/6/8 Spirit from your Field, you can pay one cost to summon an "Imaginary Beast" family Spirit from your Hand.
[LV1][LV2][LV3] (Your Attack Step) When your Cost 2/4/8 Spirit attacks, the opponent can only block with [LV1] Spirits or [LV3] Ultimates.