Pros:

1. Already the Mystery is better than Kakashi [Anbu], being prompt and usable 3 rounds in a row, with only 20 chakra. Now it's only a matter if the damage is good enough.

2. He has a dodge, but with low chance.

3. He has leech, don't know how good it is (Oasis really needs to put a percentage on skills).

Cons:
1. No chase.

2. I don't have him so can't check his stats.

3. Only 4 talents instead of 5.

Also has an average standard attack, that's not good or bad btw.

Waiting for his skillbreakthrough to beat Kakuzu [Earth Grudge Fear]'s skillbreakthrough, also for another skill when upgrade stars. :D

Mood his Ninjutsu to 65%, stack him, place him in 1st position (or second if you have Jonin Minato), and let's see what happens lol, if you have ~40k power advantage over opponents you might get some funny wins with this. :D