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 :

• Banana Back Item

  Banana Back Item
• Gold Wand

  Ignore 5% targets dodge.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• GM back item
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• Flame Soul Electric Guitar
• Kettle
• Scroll: Red Curse seal
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Black Silver Electric Guitar
• S8 Ancient Scroll of Golden Snake

  Increase all attack damage by 4%, and Decrease damage taken by 4%. But reduce critical chance by 1%.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Mimosa
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Golden-bound Cudgel
• S30 Sword Tattoo Ring

  Increase 4% critical rate and ignore 4% targets dodge.
• Folding Fan: Shino
• Gummy Bear

  Restores CP by 2%. Reduce damage taken by 100.
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Ichimoku Gourd