« MVC3: Dante's Infinite Combo Without X-Factor »
The Combonauts team, which you may know of from their "Zero Damage Combo Videos" just released a short clip showing that Dante has an infinite without using X-Factor in Marvel vs Capcom 3. It can be started off pretty much any of Dante's B&B combos, but must end in the corner for it work work. Check it out after the break.

According some Twitter and YouTube comments it sounds like this has already been patched and Dante gets pushed back too far to continue it after 13 total hits.