You might as well compare with these Back Items so you can decide which Back Items you're gonna use for ninja Saga Pvp or in Hunting House for easier killing the boss or your opponent in ninja saga PvP
These Back Items might have better effect . Here we go :

• S22 Shinnoto Monks Staff

  Increase 4% critical rate and reduces damage received by 4%.
• Mace of Pandemonium

  Increases attack damage by 6%. Has 4% chance to convert damage taken to HP positively.
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Flag of the Burning Legion

  Reduce 3% damage taken and 12% chance to absorb 2% HP of enemy who attack you.
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Light Cry Raijinco
• Orange Koi
• Civet Cat Tail
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Roasted Turkey

  Restore 20 HP every turn.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• S44 Earth Caller

  Increases attack damage by 4% and max HP by 5%.
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Curved Spear
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Scroll: Terminated Rock
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Scroll: Rikugo
• Flour Stick
• Gunbai: Gyoji
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.