Hey guys!

+2 is kinda useless because you won't really have a situation to buff 12 edo tensei units.

So choose between Y or L versions, Y is great generally in any situation, while L is amazing with ninjas that do most of their damage with mystery and not chase/standard (although keep in mind that you first need to do Sasori's mystery and then other mysteries so it might not be ideal, but might be interesting to try with the round 1 mystery ninjas)

Obviously not ideal but you'll have to use if you're using the L mystery

Both of these are great, I personally prefer Y one

Y one is much better if you expect your Sasori to die often (which he probably will anyway)

Y one might be better generally because he'll be reviving more often just to cast his passive and mystery

Breakthrough priority is really hard to determine. Personally all of them are equally important so you should focusing on getting them all anyway

1. Fire Main

2. Fire Main 2

3. Earth Main

A round 1 killing machine team, use the Sasori and Earth Main mystery first and hope that Nagato can drain 20 more chakra for your Hiruzen :D

4. Earth Main 2