When this card was either revealed by the effect of your "Godseeker SteelMaiden005 Sybil" or sent to the Trash by the effect of your "The Grandwalker Athena," you can add it to your hand. When you've done so, put one core from the Void to a Grandwalker Nexus you control.
Flash - Negate the effects of every opposing Spirit/Ultimate, and return an opposing Spirit/Ultimate to the Hand. Also, by sending one core from your "The Grandwalker Athena" to the Void, send four cores from opposing Grandwalker Nexus to the Void.
Rulings:
1) This Magic card's flash effect can't negate "During this turn" effects that are already in activation.
2) In order to send opposing cores to Void, opposing Grandwalker Nexuses must have four or more cores in total on them.