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: (Cost 3 or higher) (Core Charge via Summon/Advent only once per turn)"
◆When you Summon/Advent a target Spirit, you may 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 may 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 Field [LV1][LV2] (Your Main Step) Once per turn, by revealing one at least Cost 7 Red-only/Green-only "Ancient Dragon"/"Astral Dragon"/"Galaxian"/"Warrior Dragon"/"War Dragon"/"God-King" family Spirit card from your Hand and putting it on your field, put one core from the Void to your Reserve.
Grand Field [LV2] When an at least Cost 7 "Galaxian"/"God-King" family Spirit is summoned, send two cores from one opposing Spirit to the Trash.