Requirement: If the [Number of face-up monsters your opponent controls] and [The number of Spell/Trap Cards you control] are the same, you can send up to 3 Spell/Trap Cards you control to the Graveyard to activate.
Effect: Choose 1 face-up monster your opponent controls, until the end of the turn, it loses ATK/DEF equal to [the number of cards sent to the Graveyard for this effect’s requirement] x 1000.