Power Bond

Send, from your hand or your side of the field to the Graveyard, the Fusion Material Monsters that are listed on a Machine-Type Fusion Monster Card, then Special Summon that Fusion Monster form your Extra Deck, and it gains ATK equal to its original ATK. (This Special Summon is treated as a Fusion Summon.) During the End Phase of this turn, the player who activated this card takes damage to the original ATK of the monster (at the time it was Summoned).