Flash - Advent: Blue & Cost 5 or more (Either Attack Step)
By sending your Soul Core to the Trash, stack this from your hand onto your target spirit.
[LV1][LV2] (When Advents) When this Spirit advented on (Your Attack Step), by sending four cores from your Blue-only Grandwalker Nexus(es) to the Void, discard 10 cards from the opposing deck.
[LV2] (When Attacks) If one Blue-only Grandwalker Nexus you control has at least six core on it, this Spirit can't be blocked.
Ruling: Not part of the "WisdomKing" archetype, can't be affected by effects which designate them.