1 Rock monster in your GY + 1 Level 4 or lower monster
Must first be Special Summoned with “Fossil Fusion”. You can only use this card name’s (2) effect once per turn.
(1) When this card destroys an opponent’s monster by battle: You can inflict 600 damage to your opponent.
(2) You can banish this card from your GY; add 1 monster that specifically lists the card “Fossil Fusion” in its text from your Deck to your hand