if your just starting the game then fire main would be great ,even light main is ideal since you can build a team around him with ninjas such as HInata,sasuke,guy,kabuto etc , you can go wind in the later part of the game.For e.g if you get some1 like sg naruto..As for treasure it really depends on you .If you wanna play around cancer you can go Roshi , Gnw treasure has great ninjas and can work greatly if you opt for light main since most of em are swordsmen , Not to forget about land of lightning also , since in 210 seals you can pretty much build a whole team,consisting of ay 3rd ,samui and omoi . rest of the treasure are something i dont advise.Talking about your lineup it would be much easier if you can post the screenshots of the ninjas you have.

Well, considering the only ninja you are not able to get as a pure F2P person is Cheongsam TenTen, your options are varied (considering I have a F2P account that has spent all its coupons towards Edo Tobirama and I have 50/80 frags). Considering you didnt give what ninjas you have, its hard to say what main you should go for. The easiest to build F2P teams around are Wind and Water. As for Treasures, you can't go wrong pulling in GNW treasure as a way to get closer to your Kurama Naruto or Madara, but if you want a few complete lineups before that, Jinchuriki I and II as well as the Land of Lightning Treasures can offer you a full team for ~180 seal scrolls.

As for event ninjas to go for: Shisui, Edo Deidera, Sailor Sakura (still quite good), Kisame Fusion Mode, and Kushina Habenero are some to focus on.

Best main for f2p is Water main using water cancer team, that is what 90% of f2p's who have bad luck at RNG use and it's annoying............ Very annoying

Here are all of my ninjas (I don't have many) and I'm currently running the lightning main right now. I'm thinking of spending my seals on GNW treasure cause I've heard it is the best for the long run, but I still really don't know. Thanks!

Try this team, if you ever get Iruka, switch him out with Guy and you'll have a team that will last you a while.

Also if you manage to get GNW Hinata 3 stars, switch out normal Hinata with her

* with lightning main for now since he is very versatile with many of the ninjas you have and also the GNW treasure is good for the lightning main

I was an AF using Han, Roshi and Sailor Sakura for like 7 months because I was blessed by RNGesus with -9999999999 luck. Then I slowly and painfully pieced Shisui and Masked Man. After I got these 2 ninjas, I then went SB with Shisui, Masked Man, and Itachi Anbu (got itachi Anbu from monthly sign-in ninja). I will be using these lineup because it's pretty solid until I get my SR in GNW treasure (600 SS down not counting Free Draws). I hope I can get Kurama Naruto but if I get Madara, it's still fine.

probably water main. You can build water main cancer teams which are rlly good obviously and the ninjas arent that hard to get. It will take some time tho. Also, water main has control (chaos) so you dont have to rely on other ninjas for one but the problem is you will have to use the critical chase and the chaos talent. Lightning main is also good since it has leech and would go well with gnw ninjas or sword ninjas and you can create immune teams with them; great for countering debuffs.

i am a f2p and i used team tenten for a very long time. its very useful. i bought tenten from sage treasure and got mei in a free draw.

its very useful in ranked arena and that made me get enough frags to make both tenten and mabui to 4 stars.

i used it for a long time saving my seal scrolls until i got kurama naruto last week