Doom & Namors L3's are pretty cool but I've seen them so many times now it's lost its wow factor.
Mojo's Special 3
Silver surfers sp3. Too bad the damage isn't as much as it should be from the look of the sp3...
I really love Human Torch’s special three
Symbiote Supreme sp3 as well as venom's, but I hate being on the other side of that one
Proximas sp2
Sunspot's SP2 deals great damage, Havok's sp3 destroys, but if we are talking about animations, any of nova's specials are amazing! (except they lag so bad half the time)
As for animations Sentry's sp1 and 2 are so satisfying for some reason, but for damage ill go with Massacre sp2 if there are 10 plus incincerates on the opponent or a nice booty clap smack from capiw sp2
https://youtu.be/IjsUmOPxq_k
https://youtu.be/IjsUmOPxq_k Vulture Sp3 aswell.
Grandmaster's SP2