Two-Headed King Rex [LCYW-EN158] Secret Rare ST-8 When you do: Add 1

When you do: Add 1 Level 4 or lower "Mermail" monster from your Deck to your hand

or [Sakuyamon] in its name and 1 [Rika Nonaka] among them to your hand

Set: Ancient Prophecy Card type: Synchro/Effect Monster Rarity: Ultimate Rare Attack: 3100 Defense: 2600 1 Tuner Monster + 1 or more EARTH Monsters

Set: Retro Pack 1 Card type: Effect Monster Rarity: Secret Rare Attack: 1400 Defense: 1400 If your opponent's monster attacks this face-down Defense Position card

Two-Headed King Rex [LCYW-EN158] Secret Rare ST-8 When you do: Add 1Set: Legendary Collection 3: Yugi's World Card type: Normal Monster Rarity: Secret Rare Attack: 1600 Defense: 1200