I feel like this was in the big list of rejected/commonly submitted metas.View attachment 142697
Art by Sekhlia
Welcome to this little Metagame Idea of mine. The Premise is simple: once a Pokemon enters Battle it will get the Perish Song Effect applied on it. This basically means that after 3 Turns the Pokemon will faint, if it doesn't swap out. Now multiple Strategies come in mind, you could either go for a sweeping setup and hope to take as many Pokemon with you as you can, or you could go for a stall team and hope for the best.
Unbanlist: Nothing as of now.
Feel free to discuss and give criticism ^^