フィーバーモード is a Weiß Schwarz card from ぷよぷよ PY/S38-059. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
CONCENTRATE Place the top 7 cards of your Deck into Waiting Room. Deal your opponent X damage. X is equal to the number of 「みどりぷよ」 among those cards. (Damage can be cancelled)
This card was printed in Japanese only; the English text above is an unofficial community translation.