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: ("Shell Insect", "Parasite", "Shellman", "Blade Insect" & Cost 3 or higher)" (Exalted Sword & Brave) ◆When you summon/advent a target Spirit/Brave, 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 [LV2] (Your Attack Step) When your Spirit with an effect that contains "High Speed/Swift" in its name decreases the opposing Life, once per turn per Spirit, it can be refreshed. This effect does not stack.