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 :

• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Frost Soul Electric Guitar
• Ancient Pipe

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S74 Burning Wings

  Increases attack damage by 4% and Combustion chance by 25%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Tail of Kyubi

  Forged with chakra of the legendary tailed beast, Kyubi. 100% immune to Burn effect and increase 3% Combustion chance.
• Thanksgiving Candle

  Has 15% chance to absorb 2% HP of enemy who attack you. Increase 7% Combustion chance.
• Ice Cystal Raijinco
• Firefox Tail
• Yolanda Rescue First Aid Kit
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Red Shell
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Newbie backpack (Red)

  Double mission XP reward in level 1 to level 10.
• Holiday Doll

  Expecting Santa in every year! Critical and dodge rate increase 3%.
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• Hidden Green Umbrella
• 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.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Celestial Wood Raijinco
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S73 Smite Evil Shield

  Has 25% chance to absorb 2% HP of enemy who attack you. 8% chance to convert damage taken to HP positively.