What is your most unexpectedly powerful decklist, that doesn’t break the bank?

Like the title says, what is your strongest decklist that you didn’t expect to be great when building it, but was powerful when you played it?

For me, it was my [[Atla Palani]] deck that was only $80 and used skullclamp to cheat big creatures into play. I built it completely as a meme deck but I liked it so much I have been upgrading it since and have made it my pet deck.