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 :

• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Toxic Village Poison Potion
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• S16 King Kong Ring

  Recover HP by 1% and reduces damage received by 4%.
• Shoe of Bounty

  Increase dodge rate and critical rate by 4%.
• Christmas Pudding

  Recover 200 HP and 200 CP at the start of every turn but reduce agility by 10.
• Butterfly Wings
• Giant Copper Coins

  Increase Mission gold reward by 30%.(Mission Only)
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• Rose Bouquet

  Recover CP by extra 5% per charge
• Death Wooden Coffin
• S13 Ancient Kishu Twin Blades

  Increase accuracy by 6%
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• Black Metal Hammer
• Sealing the soul barrel
• GM back item
• Scroll: Genbu
• War Flag: World Peace
• Ichimoku Gourd
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Justice and Freedom

  Flag of the United States of America which symbolizes freedom and liberty. Recover 3% HP with every charge. Increases critical rate by 3%. Reduces damage taken by 50.
• Scroll: Fire and Earth
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Mech of Wing

  Reduce damage taken by 10%.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• 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.
• 2011 Fortune Lantern

  Ninja Saga 2nd Anniversary Carnival!