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 :

• Charmed Heart

  Theres no escaping love. Increases accuracy by 5%. Adds 40 damage in all of your attacks.
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• Blue Wolf Tail
• White Guitar
• Mini Octopus
• Red Shell
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Falcon
• Force of Taotie

  Reduce damage taken by 7%.
• Heart Aura

  Hidden feelings emerges! Recovers 2% of the user's max HP and 100 HP every turn.
• Heian-kyo Shamisen
• MegaJingleBell

  A glorious Christmas artifact which can be used in battle. Ignores 5% of enemys dodge rate. Recovers 2% of users max HP every turn.
• S5 The Guider

  Increase purify chance by 7%. Recover 8% HP when purify. Recovers 4% of the user's max HP.
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• Bell of Beast

  Recover HP by 3%. 15% chance to absorb 3% HP of enemy who attack you.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Togatsuki Paper Fan

  Increase max. CP by 10%.
• Flag: Dragon Symbol
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• S26 Bashosen

  Increase 10% Combustion chance.
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Childhood Memories

  Mothers Day 2011 Limited Edition