This Nexus can only be affected by effects tha t 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: ("Astral Deity"/Galaxian/"Astral Soul" & Cost 3 or higher) " ◆When you Summon/Advent a target Spirit, you can 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, you can send the top three cards of your deck to the trash. For each target card among them, place one core from the void onto this Nexus.
Grand Skill: 5 [LV1][LV2] Flash (Either Attack Step) - (Once per turn, send five cores from this nexus to the Void) For each of your Cost 5 or more "Galaxian" family Spirits, return opposing Spirits/Ultimates to the deckbottom, in any order.
Grand Field: [LV2] (Either Attack Step) When your Life is decreased, for each Life lost, you can pay one cost to summon a Cost 5 or more "Galaxian" family Spirit card from your Hand/Removed Zone.