Umbreon (10/90) [HeartGold & SoulSilver: Undaunted] SM10 send the top card of

send the top card of their Deck to the Graveyard

When that target destroys a monster by battle and sends it to the Graveyard: Inflict damage to your opponent equal to the ATK of the destroyed monster in the Graveyard

You can only use 1 "The Black Stone of Legend" effect per turn

Fusion Monsters that list "Elemental Hero Neos" as a Fusion Material Monster do not have to have their effects activated that return them to the Fusion Deck during the End Phase

If Summoning an "Invoked" Fusion Monster this way

Umbreon (10/90) [HeartGold & SoulSilver: Undaunted] SM10 send the top card ofSet: HeartGold & SoulSilver: Undaunted Type: Darkness Rarity: Holo Rare Retreat cost: Colorless