[LV1][LV2] Only cards whose name contains "Etemon" can be stacked on top of this Spirit for Advent.
[LV1][LV2] (When Attacks) You can return 1 opposing Spirit from the Ultimate family to the top of the deck. When you've done so, the opponent can summon a Spirit card from the Champion family from their hand. However, it cannot activate its (When Summoned) effect.