I think it should be allowed if the tournament takes place in 5.2, as there will be an alternative defensive cd trinket with better passive mitigation. Gearing shouldn't even be considered. There isn't even a date set on the tournament, so there's probably time for anyone to get any gear. As for the CD being too broken for 3s in 5.1... well I think that's bs. There's enough burst and control in this bracket to deal with an AGM if it's a last-ditch effort, and all the burst and control abilities in this bracket are on really short cooldowns so it's not like you won't have another chance really soon to line up another burst in the event your first shot got spoiled by a bubble. It's just another trinket for your team to call out when someone uses it. Not that big a deal. Also, the argument that an AGM can't be used tactically and is just a save-all crutch is also pretty bogus. It is absolutely a cd you can plan around and make plays off of if you're able to manipulate your opponents positionally.