how was show of power? was it better than moment of weakness?
also i would say 2x water prison and 1x backstab.
Combination of jutsu might be better than 3x of each, but if you want a straight up answer of only playing 3 jutsus.
play 3x water prison, the card is relevant early-mid-late game. backstab is only relevant early game, which you aren't doing by pushing out snake sword users.