Drytron Asterism (GEIM-EN035) - Genesis Impact 1st Edition

During the Main Phase: Target 1 "Drytron" monster or 1 Ritual Monster you control, and 1 face-up monster your opponent controls; your monster loses exactly 1000 ATK until the end of your opponent's turn, and if it does, destroy that opponent's monster. You can only activate 1 "Drytron Asterism" per turn.