< Marvel vs Capcom 2 | Spiral
General Gameplan
At a low level, superjump with Spiral. If it's safe, activate Dancing Sword. Land and chip when safe throwing out the swords via lp. If they superjump up to you, use Kyuukouka Dance to drop faster and reset positioning. Having a backing assist such as Sentinel-Y or Sabretooth-B will make your life easy. You will likely also need an antiair so that you can some room to activate swords.
You can also try to use teleports combined with Doom-B or Tron-Y. Since her teleport is near instant, this can be pretty effective.
Advanced Strategy
Using Teleport as a punish
Teleport is so fast and flexible that you can react to opponent supers in a way that avoids them and then punish normally safe attacks. Very useful against Cable, here is an example against Storm:
