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 :

• Beast Mace
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Triple Taiko

  Increases Max. HP by 4% and healing power of scrolls by 100%.
• Scroll: Taiin
• Mini Octopus
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Decorative Rope
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• Scroll: Guren
• Chakra Message Stick
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Successor Fan

  Restores HP & CP by 2%. Has 7% chance to freeze enemy who attacks user (2 turn). Frozen target cannot move but damage taken is reduced by 80%.
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Straw Hat

  Increase dodge rate by 3%.
• Puppet: Hakuki

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Wooden Repeating Crossbow
• Ninja Bag

  Increase healing power of scrolls by 20%.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.