I just had a quick go with the new Gauntlet mode, though, and I can see how it might bring me back.
This is part of Patch 1.4, which also brings big changes to a whole bunch of cards and introduces the new ranked season.
Gauntlet mode seems like a good way of capturing some of the best aspects from that, then heading off to a playground where there’s plenty of room to experiment.
Manage cookie settings Riot also talk about special cosmetic rewards for Gauntlet mode, but w/e.
They’ve also tweaked Ranked mode so it’s easier for high-level players to see the impact of their multiplayer matchmaking rating, and made significant changes to many, many cards.