Miser Glutvault (Pro Fest X Rare Special Pack Vol. 2) (BSS05-030) [Battle Spirits Saga Promo Cards]

[LV1-LV2-LV3] During Your Attack Step

All of your yellow spirits gain [Curse].

[LV2][LV3] When This Spirit Attacks

Select one of your opponent's spirits that costs 7 or fewer. For each spirit you control, remove one core from the selected spirit and place it into their reserve.

[Chain: Yellow] (If you have a yellow symbol, also activate the following effect.)

Select one of your opponent's spirits. Reduce its BP by 2000 during this turn.