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 :

• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Neptunes Healing

  Amazing power from Neptune. 3% chance to convert damage taken to HP positively and recover 3% HP at the start of every turn.
• Scroll: Sun of Campaign
• Water Shark Skis
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• S56 Curse Brush

  A legendary Ink Brush that has the ability to materialize drawings. Increase critical rate by 5% and accuracy by 6%.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Sealed Wood

  A back item which lost the original effectiveness.
• Frost Soul Electric Guitar
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Christmas Bag

  Reduce damage taken by 10.
• Sealing the soul barrel
• Rose Bouquet

  Recover CP by extra 5% per charge
• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• Fairy Wings

  Fairy wings that owned by a fairy
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Gruidae Wing

  Each turn recover 80 CP. Recover CP after HP reduction. (Amount: 8% of HP reduction)
• S18 Evil Spirit Wings

  Increase 10% critical rate.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.