PHRE-EN042 * Fleur Synchron * Rare * Phantom Revenge Indiora Doom Volt the Cubic Emperor Xyz Summon 1 "Mathmech" Xyz

Xyz Summon 1 "Mathmech" Xyz Monster using only those monsters

You can only use this effect of "White Steed of the Floral Knights" once per turn

then you discard the chosen cards from both players' hands

or Special Summoned by Tributing 1 Level 10 "Ultimate Crystal" monster (in which case you do not use "Polymerization")

you can Special Summon 1 DARK ""Allure Queen"" monster from your Deck or GY

PHRE-EN042 * Fleur Synchron * Rare * Phantom Revenge Indiora Doom Volt the Cubic Emperor Xyz Summon 1 "Mathmech" XyzIf this card is sent to the Graveyard as a Synchro Material: You can Special Summon 1 Level 2 or lower monster from your hand.