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 :

• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Yolanda Rescue First Aid Kit
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Scroll: Red Curse seal
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• S42 Hanbing Hammer

  8% chance to convert damage taken to HP positively.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Hanagara Hagoita

  Increase max. HP by 3%.
• Master Scroll

  Restores HP & CP by 3%.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Merlins Magical book

  Increases attack damage 5%
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Folding Fan: Shino
• Extra Large Presents Bag

  A large present bag, but nobody knows what it contains.
• Hidden Green Umbrella
• Scroll: Yinyang Seal
• Flag: Dragon Symbol
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.