Entei EX (103/108) [Black & White: Dark Explorers] Quick-Play Spell during your opponent's Standby Phase:

during your opponent's Standby Phase: You can inflict 300 damage to your opponent for each card your opponent controls

if this card is in your GY: You can banish 1 other Spellcaster monster from your GY

change the Battle Position of this card to Attack Position at the end of the Damage Step

if your opponent has more total cards in their hand and their side of the field than you do: You can detach 1 Xyz Material from this card

(You do no use "Polymerization")

Entei EX (103/108) [Black & White: Dark Explorers] Quick-Play Spell during your opponent's Standby Phase:Set: Black & White: Dark Explorers Type: Fire Rarity: Ultra Rare Retreat cost: Colorless,Colorless,Colorless