Fossil Machine Skull Buggy

1 Rock monster in your GY + 1 Level 4 or lower monster Must first be Special Summoned with "Fossil Fusion". When this card destroys an opponent's monster by battle: You can inflict 600 damage to your opponent. You can banish this card from your GY; add 1 monster that specifically lists "Fossil Fusion" in its text from your Deck to your hand. You can only use this effect of "Fossil Machine Skull Buggy" once per turn.

Rock EARTH Fusion Monster 4 fusion