[LV1][LV2][LV3] (When Summoned) You can put two cores other than Soul Core from your Trash to a Yellow-only Grandwalker Nexus you control.
[LV2][LV3] (Your Attack Step) When your "WinterAttire"-named Spirit attacks, draw a card. Also, when you control a Grandwalker Nexus, once per turn, refresh your attacking Spirit.