Thunder Dragondark [MP19-EN167] Prismatic Secret Rare Duelist Pack Dimensional Guardians Set: Sword & Shield: Chilling

Set: Sword & Shield: Chilling Reign Type: Water Rarity: Uncommon Retreat cost: Colorless

or destroyed by an opponent's card effect

or 1 Spell/Trap that specifically lists the card "Ancient Gear Golem" in its text

When this card is equipped with an Equip Card

and the monster it is battling loses 1500 ATK and DEF until the End Phase

Thunder Dragondark [MP19-EN167] Prismatic Secret Rare Duelist Pack Dimensional Guardians Set: Sword & Shield: ChillingSet: 2019 Gold Sarcophagus Tin Mega Pack Card type: Effect Monster Rarity: Prismatic Secret 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