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
• S52 Gold Dragon Scroll

  Reduce damage taken by 7%. Ignore targets dodge rate by 5%.
• Leopard Cat Tail
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• S79 Blood Feather

  Has 15% chance to convert damage taken to HP positively.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Childhood Memories

  Mothers Day 2011 Limited Edition
• Water Symbol Guitar
• Blue Wolf Tail
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• Ink Cloud

  Additional 40 HP damage upon all attack.
• Bronze Torch of Zeus

  Increase mission XP reward by 200
• Nightmare Grudge

  Ignore 4% targets dodge.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• Flame Soul Electric Guitar
• Christmas Pudding

  Recover 200 HP and 200 CP at the start of every turn but reduce agility by 10.
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.