If you have any other facebook profile you can win tokens on that account.Here is how:
1.When you login ninja saga character go to scrach cards
2.Refresh page and make new character
3.Scrach cards on that account than delete that account
4.Do the Same thing many times and maybe if you be lucky you can won Many prizes
Prizes:
1.2000 tokens
2.Back Item
3.Weapon
4.Gold
5.Jutsu
6.XP
7.TP
8.Pet
9.Consuable Items
10.Tokens