During your Battle Phase, if a "Superheavy Samurai" monster you controlled destroyed an opponent's monster by battle, you can: Immediately after this effect resolves, Synchro Summon 1 Synchro Monster, using Materials including this card you control (this is a Quick Effect). If you have no Spell/Trap Cards in your Graveyard and this card is in your Graveyard: You can target 1 "Superheavy Samurai" Synchro Monster you control; you cannot Special Summon monsters for the rest of this turn, except "Superheavy Samurai" monsters, also reduce the targeted monster's Level by 1, and if you do, Special Summon this card. You can only use each effect of "Superheavy Samurai Fist" once per turn.