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 :

• Screw Pattern Skis
• Big Cheese

  Recover CP after HP reduction. (Amount: 10% of HP reduction)
• GM Phone

  GM Phone
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• S9 Ancient Akazonke Gunbai

  Increase critical rate and accuracy by 4%. But reduce Max.HP by 2%.
• Shigu Twin Blades
• Taurus Wand

  A necromantic wand with a figurehead of a bull. Used by necromancers in ancient times to amplify their power. Recover 100 HP at the start of every turn. Has a 12% chance to absorb 3% HP of enemies who attack you.
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.
• Hidden Green Umbrella
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• S2 Solar Aura

  Increase agility by 3 and accuracy by 7% .
• S14 Profound Pincers

  20% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• Ancient Shinobi War Decorated

  Additional 60 HP damage upon all attack.
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Sakura Straw Hat

  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.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Ichimoku Gourd
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Scroll: Grassland
• Crystal Ice Mirror

  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.