Thunder Dragondark [SOFU-EN019] Ultra Rare Advent Calendar 2018 its ATK becomes double its

its ATK becomes double its original ATK until the end of this turn

while your LP are higher than your opponent's

Cannot be used as Link Material

this card and any Plant monsters it points to cannot be destroyed by battle

Set: Hidden Summoners Card type: Effect Monster Rarity: Super Rare Attack: 300 Defense: 1200 You can target 1 "Nephthys" card in your GY

Thunder Dragondark [SOFU-EN019] Ultra Rare Advent Calendar 2018 its ATK becomes double itsSet: Soul Fusion Card type: Effect Monster Rarity: Ultra Rare Attack: 1600 Defense: 1500 (Quick Effect): You can discard this card; add 1 Thunder Dragondark from your Deck to your hand. If this card is banished, or sent from the field to the GY: You can add 1 Thunder Dragon card from your Deck to your hand, except Thunder Dragondark. You can only use 1 Thunder Dragondark effect per turn, and only once that turn.