Changes

Rio draws and activates "[[Ice Fire World]]" which will allow both players to treat a monster as 2 Overlay Units when Xyz Summoning a WATER Xyz Monster. Due to the effect of "Ice Fire World", "Sylphine" is treated as 2 Xyz Materials. Rio overlays "Sylphine" to Xyz summon "[[Rioto Harpyia, the Cold Bird Princess]]" (2500/2100). Rio activates the effect of "Rioto Harpyia," detaching an Xyz Material to reduce "Black Ray Lancer"'s ATK to 0 (4000 → 0). She the then has "Rioto Harpyia" attacks attack "Black Ray Lancer", but Shark activates the effect of "Full-Armored Xyz" to send the equipped monster to the Graveyard to prevent "Black Ray Lancer"'s destruction in battle (Shark 3000 → 500).