I was growing sick of pve and uninterested in doing a new release, but then you promised double iso, so I’m back in. My 4* covers languishing in my queue thank you.
Yes! A big thank you to the Devs, this is one thing the game really needs, much appreciated!
Aaaaargh! So happy! 
I wasn’t paying attention, 1000 iso8 just popped up out of nowhere!
So, so happy :')
They increased permanently the daily alliance iso rewards. I think double iso pve should become permanent!
Last double iso pve I was able to basically finish off champing all my 3*s…that iso flow was nice.
And here I was wondering where I’d get 160k in 12 days to finish my last 2 3* chars - double ISO to the rescue!
That’s funny -that’s where my double ISO is going as well, QS/Doc Oc are the last two 3*'s I haven’t yet champed.
I am strongly considering softcapping my Punisher at level 229 now. That means I have 9 days to get 200 K ISO to champion Ghost Rider, and with double ISO it might be feasible. Not to mention that Punisher is boosted in the event and should be able to kick some behind. 
Rags and… Doc Oc for me.
I think Oc is the last one on everyone’s list lol.
I actually champed Ock very early in the process, cuz I use him a lot. Don’t judge me, I like weird teams 
Rags and Beast were my last 2 3*s to see champ status
I went Rags really early since he was in LR’s - when 5*'s weren’t around a max Rags had a big advantage there.
I also went Doc Ock pretty early. My Big Enchilada team is 3*BE, Doc Ock, and a random 3rd depending on the mood of the day. I love getting 2 waves in with a full board of strike tiles and a couple attack tiles.
My Ock was relatively early champed as well
Vision, Beast, Rags and Bullseye are my last remaining unchamped 3*s, but they are all hovering above level 130.
Wait…did I miss an actual ANNOUNCEMENT about this, or…?
There was an in-game announcement when Unstable ISO started.
Nope! Rags is the only one I have left! In your face, Bow! 
Also…
YAY FOR DOUBLE ISO!!!
I too was an early champer of Ock. I find him extremely useful against goons and characters that drop tiles that I can use against them.
My last few consist of the likes of Collosus, Sentry & Spiderman. Guys I never, ever use.
I had all Three-stars at level 166 already when the champion system was introduced, so I champed them all. Can’t remember exactly who was last.
I champed Spider-Man quite early, and keep coming back to using him. He’s never going to sweep the board but he has three decent support abilities.
Currently in use iso8 harvesting for me alongside Hulk and GSBW.
this iso will be going to punisher and cpt marvel. just need my slice to flip 