It triggers Sanctum of Ugin, allowing you to effectively chain World Breakers, since you will usually be able to cast the second one the next turn if you had the mana to get the first one down
Brazen Borrower Petty Theft is a weak card
By Lightning August 26, 2018 Anniversary Crystal Distro Card 15: UL:::UTx ululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululululutx
Theres also a few triggered abilities that further double-counters, like Byrke, Long Ear of the Law and Fractal Harness
I expect Windgrace and Edgar still because they got new cards in Core 2020 and people are updating their decks, but Muldrotha and the new cards that deck got are making a big impact
Meowth - Black Star Promo A majority of these cards were released exclusively in Japan