Where you spent your seals, bcs for lvl 77 u should have some rares, i can give u a very good team for water with your ninjas: Mabui,TenTenGNW,Ao.
Or you can try the new bomb team: Konan,Deidara,Nerfed Tobi that is actually buffed for bomb team, but if u face lots of root warrior light, u are meat, also if u are not in top 3 power, wont work either.
Get urself some rares man :P