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 :

• Christmas Bag

  Reduce damage taken by 10.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• White Metal Hammer
• Mini Scroll
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Tail of Capricorn

  Increases dodge rate by 4%. Recovers 3% HP with every charge.
• Wine Gourd
• Black Koi
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Soul Capturing Hammer

  Recover self 2% HP, reduce 3% damage taken.
• Hanagara Hagoita

  Increase max. HP by 3%.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Puppet: Hakuki (3 Days)

  Increase 3% accuracy.
  Reduce 46 HP damage taken.
  Recover 83 HP when each turn start.
• Scroll: Tenku
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• Scroll: Messenger (3 Days)

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Matsuyama Fan

  Ignore enemys dodge rate by 6%.
• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.