Yup aftermath isn’t viable in arena. I learnt that the hard way after my aftermath discordance idea failed but that was also when Discordance procs existed too. Even if it did work, it didn’t work effectively and it was short lived. Although I could have added HP and damage reduction but the way it deals damage just isn’t too good for arena anymore.
I also learnt that the hard way in season 2 as I was getting nowhere near eternal league with the aftermath build so I had to change build but I stopped PvP for a while.
Reason being that the tanky people need 100s of hits to finally go down so high hit frequency and it is easy to be interrupted from movement and get hit alot. It’s just not that good anymore in arena but I do agree with the boring same setups everybody uses.
Even having the highest ever DMG possible, you still.need lots of hits for many tanky players and especially the frustration builds that are virtually immortal.
But if you do use aftermath, Aftermath + Terrashaper+ CV . Some HP from Plagued and Fauns Gift. Some AR and Resists . 6-7× ED. Definitely cosmic orb . Find a way to dish out many damage from movements . Hunger and reduced CD and some procs. Maybe wait until the meta changes or something.