2 Union Monsters
Must first be Special Summoned (from your Extra Deck) by banishing the above cards you control. (You do not use "Polymerization".) This Special Summon is treated as Fusion Summon. If this card would be destroyed you can shuffle one of your banished Union Monsters that was used as a Fusion Material Monster for the Fusion Summon of this card into the Deck. During damage calculation, if this card you control battles an opponent's monster with a higher ATK: Pay Life Points equal to the difference in ATK; this card gains ATK equal to that difference +300, during damage calculation only. If you control no other Monsters, this effect cannot be negated. You can control only one 'Fully Armored Cybern'.