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: ("Machine Beast"/"Worldswalker"/"Fencer" & Cost 3 or higher)" ◆When you Summon/Advent a target Spirit, 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, place one core from the void onto this Nexus.
Grand Skill: 4 [LV1][LV2] (During Either Attack Step) (Send 4 cores from this Nexus to Void) Return 1 opposing Spirit to hand.
Grand Field [LV2] When your opponent summons a Spirit wihtout paying the cost, except Burst effects, put 4 cores from Void to this Nexus.