[LV1][LV2] (Opponent's End Step) For each opponent's spirit, you can reveal 1 card from the top of your deck. Add 1 Spirit card from among them with the ability "Whirlwind" to your hand. Discard the remaining cards. This effect does not overlap.
[LV2] The number of cores on all exhausted Spirits/Ultimates cannot be brought down to 0.