Soul Fist

Equip only to a Dragon Synchro Monster you control. A "Red Dragon Archfiend" equipped with this card is unaffected by your opponent's activated card effects. Once per turn: You can change the ATK of all monsters your opponent currently controls to the equipped monster's. Once per turn, when an attack is declared involving the equipped monster: You can target 1 monster in your opponent's GY; banish it, and if you do, the equipped monster gains ATK equal to the banished monster's, until the end of this turn.