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 :

• Water Shark Skis
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• Sakon Three Blades
• Scroll: Messenger (7 Days)

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

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S5 Possessed Koto

  Increase purify chance by 7%. Reduce jutsu CP consumption for 10%. Has 15% Chance to stun target when attack with weapon for 1 turn.
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• GM Phone

  GM Phone
• Wine Gourd
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• Ritual Taiko
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• Stuff Bunny

  Increase Max. HP by 2% and Max. CP by 4%.
• Scroll: Guren
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Shadow Umbrella
• S56 Curse Brush

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

  Ignore 4% targets dodge.
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Blue Pattern Skis
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• Hanami Taiko

  2011 Hanami Festival - Rhythm! Recover HP & CP by 10 every turn.