Waltz's End

Effect

[Main] Until the end of your opponent's turn, 1 of your Digimon gains "[Opponent's Turn] When this Digimon becomes suspended, delete all of your opponent's Digimon with a play cost less than or equal to this Digimon" and "[Opponent's Turn] This Digimon isn't affected by your opponent's Option cards."

Source Effect

Security Effect [Security] Delete 1 of your opponent's Digimon with the lowest play cost.