However, a new toy has been found by players, the Legion Pocket Portal which will give you 10 stacks of Sinfall Boon in Mythic+ Sanguine Depths. This toy summons 10+ imps, each of which will blow up in sequence and give you a stack. The downside is the cooldown on this toy is an hour, so players will have to make sure to not do Sanguine Depths more than twice in an hour. This toy also can’t be used in combat, so players will have to be out of combat before you can get your 10 stacks, but once it’s cast — they’re good to go!
Should this be fixed? Probably, as it’s clearly unintended and Blizzard fixed the last set of toys that interacted with this buff. From the Rhan’ka’s Escape Plan toy in Battle for Azeroth to now, Blizzard generally doesn’t like toys affecting Mythic+ dungeons.