Got it done on the first try with my 2/4/1 Level 152 PX - boosted P/B and All Colors right away and hoped for a purple match, which was there. Got it, denied red and no problems!
Good luck everyone!
Edit: Ended up pulling a 
- go figure!
2/1/1 lvl 94 Xavier boosted purple/blue and all, stayed invis the whole time won my 1st try. Easiest one to date for me
4/3/3 Level 150 got it first go with purple/ black boost. Quick purple matches then invisible and sat back making short work of it.
Fury and Professor are my only well covered 4* so thats me done till they come around again.
1/1/1 Prof X, did not even think I have a chance, no boosts…and I did it, just hit the purples and then just ground him down…and for my reward 
(make him 3/3/0) makes up for 0 4*'s in the season 10 pack
E - Easy. Got it with 1/1/1. At first thought that attack tiles are go through invis…Nope.
My X is 2/5/1 so this was beyond doubt the easiest 4* DDQ. I don’t think anything will trump this in a while.
EDIT: Pulled a 
.
Got it 3rd try with 2/1/2. Takes purple power (Blind spot/invisibility) and a Little luck and patience.
Once your Blind spot tile is out, Carnage can only use GREEN, so focus on denying GREEN (and keep gathering purple for backup in case he matches your tile).
My Prof X is only 2/0/1 lvl 90 - managed to get him down to halfway with a couple of match 5s but no joy. I think just having one purple cover would be enough to win this 
I was a bit worried when the initial board was starved on purple and rich on green, but it wasn’t difficult at all. Eventually I got enough purple to go Invisible and start boosting the attack tiles, Carnage didn’t last long after that.
Got Old Man Logan yellow from the token.
5 blue and no other colours. No hiding and not enough 5 matches on the board. Damn. That’s another legendary gone.
Took 2 attempts but my 1/1/0 level 74 Prof X did it no sweat.
Got my invisible tile out and match damaged him to death 
Piece of cake.
First attempt was doing really well. Got purple in a corner, and just kept grinding. About a 1/3 health left for Carnage, and he goes: Carnage Rules, destroys purple, uses IM Freon Beam, stuns me, then killed with Scythes.
Damn. Should be doable though.
Edit: My PX is 3/1/0. Really missing that second
to take better advantage of Carnage’s attack tiles.
Well.
My PX is 4/2/3 and Level 120, so I felt like I was had a pretty good shot right off the bat.
In my opening board there was a match-5 I could make straight away, awesome! I’ll just match that and…
and then the cascades started. Not one, not two, but SIX additional match-5’s off the starting play.
Carnage never had a chance.
I guess I used up all my luck for the rest of MPQ. Going to open up this legendary token and expect to get Bagman, somehow.
Actually, it was Jean Grey Purple, which I needed.
This has to be the easiest “Clash” to date. Won 1st try with my level 111, 2/1/2 Prof and no boosts. Just stock up on purple and hide while Carnage kills himself with his attack tiles. It takes a while, but it was shockingly easy.
Pulled a 
.
Her
is the ONLY 4* cover I have 5 of, and that’s the 2nd time I’ve pulled one from a 
not needing either… WTF. 
From what I gather from this forum, there seems to be an inordinate amount of
pulled from
. She is officially the 
of Legendary Packs.
Easy come, easy go I suppose. I take solace in the fact that this particular
wasn’t my reward from a 7 day PVE grind. So there’s that…
I think people are more likely to post a complaint when they pull an unneeded Invisible Woman… In other word, the posts-to-pulls ratio is higher.
Does anyone know what the record is for lowest levelled and covered 4* DDQ win is?
1st try, 2/3/0
The only ability that matters in this is his purple and probably a good board. His yellow is obviously useless but his blue would be a good damage booster for those rare 5 matches.
My level 127 0/3/2 did it on the second go. Only reason I lost on the first go was because Carnage got a lucky cascade when his green went off that matched my invisible tile and I didn’t have enough purple to reinstate it, so he whacked me with his red.
Second go there was just enough purple for me to keep some AP in reserve while not being enough around for Carnage to match my invisible tile away. After that it was a case of denying green as much as possible, trying to avoid 4s or 5s that would kill the invisible tile and just turtling up while Carnage’s own attack tiles took him down.
I think I’d have struggled with most other characters because I’d be limited entirely to match damage.
I did it second try with my 0/1/1 level 74 PX. First time I’ve ever done it! Pulled Elektra from the token.
Just wondering, though, why the attack tiles Carnage generated for me did no damage to him at the end of each turn?
This was an exercise in tedium for me, as attack tiles aren’t working for whatever reason on my end. However, with purple a-plenty, it wasn’t exactly hard. My ProfX is 3/5/5 at 270 though. (Only maxed 4*).