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 :

• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• Flame Blade Raijinco
• Fairy Fishing Rod

  Each turn recover 3% HP and 100 CP
• 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.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Wood Top
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• Roasted Turkey

  Restore 20 HP every turn.
• Shadow Umbrella
• S76 Buckler and Sword

  Increase max.HP by 12% but reduce max. CP by 2%.
• Toxic Spider Web

  10% chance to apply Restriction on enemies who attacks the user for 1 turn.
  5% chance to freeze enemy who attack user (1 turn). Frozen target cannot move but damage taken is reduced by 80%
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Book of Slate

  Decreases Max. HP by 1% and Increase Max. CP by 10%. Increase 3% purify chance.
• Wooden Hammer
• Hidden Green Umbrella
• S29 Yanki Protective Magatama

  Increase accuracy by 8%
• Blue Crystal Wings

  Recover 15% extra CP when charge.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.