I was bout to say save for madara in great ninja war treasure but he's a 1k pull but i think someone that would be good to go for is edo roshi or edo yagura, save to 194 seals and then during a recruitment feed back event spend them, the rewards should help u get the remaining 16 you need to get edo roshi or edo yagura and which ever one you go for, go for their breakthroughs