Flash - Advent: Blade Beast & Cost 5 or more (Start of Your Attack Step)
By sending your Soul Core to the Trash, stack this from your hand onto your target spirit.
[LV1][LV2] (When Attacks) The opponent can only block with three Spirits. When blocked, choose one blocking Spirit to battle with.
[LV2] (When Attacks) Send two cores from every opposing Grandwalker Nexus to the Void.
Rulings:
1. By this Spirit's Lv1 effect, Ultimates cannot block this Spirit.
2. (When Blocks) effects of the opposing Spirit only activate when a blocking Spirit is chosen among the 3.