Every Class is worth to play even you're a F2P in my opinion .. As a wind, you c*e some ninjas that are easy to obtain like a Female Blitz-Root Team (Flower Guard with Hinata GNW and 2 other buffer ninja for Hinata), you're gonna buy Gaara, then save some coupons and buy Sage Naruto and get Kurenai atleast 4star and fully skillbreak her .. As time passes, you will able to save good amount of Seal Scrolls then get Roshi .. Wind Main with Roshi, Fuguki and Kurenai is effective too ..