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 :

• Shinobi Curse Battle Umbrella
• Butterfly Wings
• Hanami Lantern

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Chakra Message Stick
• Large Wooden Hammer
• 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.
• GM back item
• Light Cry Raijinco
• 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%.
• GM Goldfish

  GM Goldfish
• Christmas Bag

  Reduce damage taken by 10.
• Curved Spear
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• Huginn & Muninn

  Reduce 4% damage taken. Has 10% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Black Koi
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Champion Cup!

  Ultimate prize for Champions.
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Death Wooden Coffin
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.
• Shishimai Back

  Restores 3% of users max HP.Has 4% chance to convert damage taken to HP positively.
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• Flour Stick