When the opposing deck only has 20 cards or less, this card in your Hand is Cost 1.
[LV1][LV2][LV3] (Your Attack Step) When a Spirit you control is blocked, discard the top card of both player's decks. Then, you can pay one cost to summon a Cost 9 or less "Reaper"-named card from your Trash.
[LV2][LV3] (Either Attack Step) All your "Reaper"-named cards can't be destroyed by BP comparison and are treated as being on their highest Level.