Flash - Grand Advent: Emperor Beast & Cost 5 or more (Your Turn)
By either sending your Soul Core to the Trash, or putting a core from your Grandwalker Nexus to a spirit you control, stack this from your hand onto your target spirit.
[LV1][LV2][LV3] (When Attacks) At the end of battle, by adding an "Emperor Beast" family card from your Hand to this Spirit as a pre-Advent card, this Spirit refreshes.
[LV2][LV3] (When Attacks) When your Life is 3 or less, for each "Z"-named pre-Advent card on this Spirit, send an opposing Life to the Reserve.