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 :

• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Ferret Tail
• Carrot Launcher

  Increase agility by 1. (Easter 2011 Limited Edition)
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Mini Octopus
• Patriot Aegis

  A mythical shield that can block even the most vicious attacks. Increases max HP by 3%. Has a 60% chance to recover 5% of maximum HP and reduces damage taken by 75.
• GM back item
• Ishiyama Lantern

  Reduce damage taken by 49.
• Yolanda Rescue First Aid Kit
• 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)
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Christmas Trumpet

  Ignore enemys dodge rate by 4% and recover 3% CP with every charge.
• Scroll: Terminated Rock
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Mirror of Thousand Hands
• Wooden Hammer
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Hide Guitar
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Horror Scarecrow

  Increase attack damage by 5%. Reduce damage taken by 150.
• Chakra Message Stick
• Apricot Pipa
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.