This Nexus can only be affected by effects that specify "Grandwalker Nexus". Core can only be placed on this Nexus through the effect of "Core Charge" or effects that specify "Grandwalker Nexus", also, core on this Nexus can not be moved except by effects that specify "Grandwalker Nexus".
Core Charge: ("Fighting Spirit", "Artificial Soldier, "Worldswalker", "Avatar") (Nexus) (Core Charge via Summon/Advent/Deploy only once per turn)" ◆When you summon/advent/deploy a target Spirit/Nexus, put one core from the void onto this Nexus. ◆When this Nexus is deployed, if you do not control a Nexus with the same card name as this card, send the top three cards of your deck to the trash. For each target card among them, put one core from the void onto this Nexus.
Grand Field [LV1][LV2] (Your Attack Step) Change the text of your "Assault"-named effects from "Nexus" to "Nexus/Grandwalker Nexus."
Grand Skill: 4 [LV2] Flash -(Your Attack Step) - (Send four cores from this Nexus to the Void) By refreshing this Grandwalker Nexus discard 5 cards from the top of the opposing deck.