So sánh thẻ bài

"X-Head Cannon" + "Y-Dragon Head" + "Z-Metal Tank"
Must first be Special Summoned (from your Extra Deck) by banishing the above cards you control. (You do not use "Polymerization".) Cannot be Special Summoned from the GY. You can discard 1 card, then target 1 card your opponent controls; destroy that target.

1 Rock monster + 1 Level 7 or higher monster in your opponent's GY
Must first be Special Summoned with "Fossil Fusion". Before damage calculation, if this card battles an opponent's monster: You can switch the current ATK and DEF of that opponent's monster until the end of that Damage Step. If this card attacks a Defense Position monster, inflict piercing battle damage. If this Fusion Summoned card battles an opponent's monster, any battle damage it inflicts to your opponent is doubled.