You can only control 1 "Stoic Challenge". Equip only to a face-up Xyz Monster that has Xyz Material. It gains 600 ATK for each Xyz Material attached to a monster you control, and any battle damage your opponent takes from battles involving it and their monster is doubled, but its effects cannot be activated. During your opponent's End Phase: Send this card to the Graveyard. When this card leaves the field, destroy the equipped monster.
![Stoic Challenge [NUMH-EN055] Super Rare | Cracking-Singles](http://www.cracking-tcgsingles.com.au/cdn/shop/products/2f082988-7ecc-5f03-badd-90032c99008a_86563e2f-2e63-4f2a-b1d1-ea07721ec2a4.png?v=1647911670)
