So you need a card for mirror matches?
IGAS-JP078 相視相殺 Soushisousai (Stalemate)
Normal Trap Card
(1) During this turn, both players must play with their hands revealed. While your hands are revealed due to this effect, if both players have cards with the same name in their hands, neither player can activate the effects of that card or cards with the same name.
Note: This card’s name sounds like Mutual Love (相思相愛), but it reads as basically “The opposites glance at one another”. Or “Both glance and cancel out”. We went for a “Concept of the Idea” name than trying to translate it literally. Something like “Dead Heat” or possibly a Mirror based phrase might also work.