When this pre-Advent card is discarded by the effect of the [During Advent] Spirit on top of it, send one core from an opposing Spirit/Ultimate to the Void.
[LV1][LV2][LV3] (When Summoned) Draw one card from your deck.
[LV2][LV3] (When Attacks/Blocks) Destroy all opposing LV2 Spirits. For each opposing Spirit destroyed by this effect, add one core from the Void to this Spirit.