Just a couple of fun things with Izayoi blockstrings I've found:
In regular mode, 5B/2B > (5C) > 6C >236a makes a solid string that hits opponents who try to jump or mash out after the 5C. Like stated before in the thread, you can combo off of a confirmed 6C with 236B~214A into a full bnb.
5B/2B > 5C > 2C > 214B actually sets you up behind your opponent with the proper spacing, and you can follow it up with 6B > RC as a tricky cross-up overhead into a good bnb. You can also choose to go for a grab after the 214B, or even go into something like 5B/2A into a bnb since you're crossing your opponent up. A lot of people I play against online don't see it coming and/or can't react fast enough. Of course, this will probably only work once against the person you're playing. If they see the teleport coming, they can easily mash out of it.
On a somewhat related note (maybe this is already obvious), in Gain Art, doing 66 J.C > 2A >5C is a good OS considering that if your opponent blocks the J.C, they'll have to quickly block the 2A low or eat a combo -- even if he blocks both, you're still set to continue you're blockstring. On hit, the whole string connects, leaving you plenty of time to confirm and follow up into 236C~6D into the appropriate bnb.
