Sillva, Warlord of Dark World [EEN-EN023] Ultimate Rare Secret Rare then you can make 1

then you can make 1 other "D/D" monster you control and this card gain 1800 ATK until the end of this turn

You can only use this effect of "Subterror Behemoth Umastryx" once per turn

•When an opponent's monster declares a direct attack: You can Special Summon this card from your Graveyard

put a card from your hand on the bottom of your deck

After resolving a card effect that targets this face-up card

Sillva, Warlord of Dark World [EEN-EN023] Ultimate Rare Secret Rare then you can make 1Set: Elemental Energy Card type: Effect Monster Rarity: Ultimate Rare Attack: 2300 Defense: 1400 If this card is discarded from the hand to the Graveyard by a card effect, Special Summon this card to your side of the field. If this card is discarded from the hand to the Graveyard by your opponent's card effect, your opponent selects 2 cards in their hand, and returns them to the bottom of their DEck in any order.