Flash - Advent: Machine Beast & Cost 3 or more (Either Attack Step)
By sending your Soul Core to the Trash, stack this from your hand onto your target spirit.
☼[ Burst: After an opposing Spirit/Ultimate attacks]
Summon this Spirit card without paying the cost. Alternatively, Advent it. If you used Advent, return three opposing Spirits/Ultimates to the bottom of the deck in any order.
[During Advent][LV2][LV3] Twinkle Fortress - Your refreshed [During Advent] Spirits are unaffected by opposing effects.
You need to send Soul Core to trash to burst advent.