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 :

• Ocean Ring

  Increase 1% accuracy.
  Additional 2 HP damage upon all attack.
• Shinobi Curse Battle Umbrella
• Father's Heart

  Reduce damage taken by 6%.
• Scroll: Messenger

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• 2011 Carnival Jiegu

  Ninja Saga 2nd Anniversary Carnival! Each turn recover 100 HP and 100 CP.
• Native Drum

  5% chance to convert damage taken to HP positively.
• S15 Ancient Seitenken

  Recover CP after HP reduction. (Amount: 16% of HP reduction)
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Trident
• 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.
• S16 Umbra Steel Wheel

  Reduce damage taken by 270.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Purple Dragon umbrella
• Mirror of Thousand Hands
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• Gemini Halo Glyph

  Increases damage by 4%. Reduce damage taken by 65.
• Blue Wolf Tail
• Celestial Wood Raijinco
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• White Metal Hammer
• Ferret Tail
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Gunbai: Gyoji
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.