This is kinda silly, but I've been getting people with stuff > b.bufu > 2C (whiff) > 5D reset. The logic here is that your opponent will be too busy shaking the ice to see Thanatos coming. After they have been conditioned to jump/backdash, they can be caught with 5C. I dunno if b.bufu would work after 2C whiff, but if it would work, you could catch really far jump-backs and get them into the corner with b.bufu > sb.agi > stuff.
Edit: Okay, so I actually decided to play the game and you can do b.bufu after 2C whiff (dunno why I'd think you couldn't). Basic combo is something like 214B FC > 214CD > 2B > j.B > j.236D [2] > 2AB > 236D [9~3] > 2A > 5B > 5C > j.C