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 :

• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.
• Gunbai: World Peace
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• Toxic Village Poison Potion
• Scroll: Fire and Earth
• Grand Light Gourd

  Increase 3% damage
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Folding Fan: Shino
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Clear Cross

  Increase 3% purify chance. Each turn recover 150 HP and 150 CP.
• Scroll: Kochin
• Cancer Assegai

  Increases critical rate by 4%. Reduce damage taken by 3%.
• Mini Scroll
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Flame Soul Electric Guitar
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Civet Cat Tail
• Purple Mixing Yellow Umbrella