The new Armored XYZ cards had finally hit Master duel. With these new cards, it gives sharks(or any xyz deck) a buff in power and an interruption, if played correctly.
XYZ armor fortress can be summoned with any rank 3 or 4 xyz monster. You detached up to 2 materials to add the armored xyz cards to your hand,and while its equipped with a monster, the monster deals double the damage(seen from the dark world duel) Dark knight lancer can be summoned with any rank 5 or 6 xyz monster. Dark knight adds a xyz card from the grave to the hand, and if a monster was equipped, once per turn, dark knight attach a monster from the opponent side as its material