[2019] Went 15-5 with 20 Islands and 40 Petitioners, I feel like they should have been banned as they were in Pauper, also have this meme.

In the War of the Spark Chronicles Singleton event, Persistent Petitioners is under 2% of the metagame, and has does not have a positive win rate. It's not a problem from a balance perspective.

Certainly some people will find the deck annoying, but we like that it makes the event more accessible for people starting off in it without disrupting the format.