Why doom can't doom?? I used 6* bwcv by the way node are not that difficult and you got 5k units 😏
As said above, BWCV should remove his buffs. Abs man will make the indestructable and unblockable buffs disappear almost instantly, mojo and kindred too. Corvus can remove all his armor in one parry. Venompool's om nom doesn't count as a nullify (venom's does for some reason) so should work. Ronan should be able to stun lock him into the shadow realm with all those buffs, but might be a long fight. Now you are making me itch to go test him (must save energy for potions for necro, must save energy for potions for necro...)
Seeing that aegon gives me an idea for a horrible plan. Play very slowly, baiting out specials, just building your combo to 999. Then you should be unblockable. For a more realistic option, champions who can get openings like ghost kitty should work. Magneto I dunno if his aar is enough. Power control champs could potentially work. Neutralize champs can control the buffs.I'm not sure, but Kate might work if you can push him into the corner, keep baiting and punishing special one while dealing massive damage. Use riposte to get openings.