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 :

• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Beast Mace
• Scroll: Messenger

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• War Flag: Syoshin

  Increase mission XP reward by 100.
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Purple Dragon umbrella
• S58 Scroll of Shadows

  Increases damage by 6% and dodge rate by 5%.
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Yolanda Rescue First Aid Kit
• Sagittarius Hunting Set

  Increases dodge rate by 4%. Additional 80 HP damage on all attacks.
• Fairy Wings

  Fairy wings that owned by a fairy
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Apricot Pipa
• Star Dawn Harp

  Increases users agility by 1. Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover HP by 2% when being put on a debuff.
• 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.
• Dark Cry Raijinco
• Raijin Raijinco
• Paper Umbrella

  Increase dodge by 3%. Reduce damage taken by 80.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Mini Scroll
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Straw Hat

  Increase dodge rate by 3%.