[LV1][LV2] During Your Turn

When you summon a spirit that costs 2, you may exhaust this nexus to select one of your opponent's spirits that costs 7 or fewer. Remove all but one core from it and place them into their reserve.

[LV2]

When one of your spirits that costs 2 is destroyed, select one of your opponent's spirits. Remove a core from it and place it into their reserve.