Hey,

I would recommend to get Minato Namikaze [Edo Tensei], because he is the best out of the 3

Naruto [Sage of Sixth Path] is outdated
Sasuke [Rinnesharingan] is good, but he needs much support, and lacks damage even with breakthroughs
Minato Namikaze [Edo Tensei] is the best out of the 3, because he is just so annoying to deal with with his debuffs dodges etc.

Minato Namikaze [Edo Tensei] is mostly every weeks event's, so piecing him will be easier. However u need to understand that Sasuke [Rinnesharingan] or Minato Namikaze [Edo Tensei] needs to be 4* to be useful

In my opinion currently the best 3* Ninja would be Kakashi [Summer]

Thank you~