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 :

• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Zombie Hand

  Increase attack damage by 15%. But each turn reduce 200 HP and 300 CP.
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• S9 Akazonke Gunbai

  Increase 4% critical rate and ignore 4% targets dodge.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• Chakra Ancestor Flame

  Reduce damage taken by 175. Has 5% chance to convert damage taken to HP positively.
• Red Koi
• Force of Taowu

  Increases Max. HP by 4% and Max. CP by 4%.
• Tail Hunter Back Item

  Increase max. HP by 3%.
• Aboriginal Hunting Set

  Increase accuracy by 5% and Combustion chance 6%.
• Gold Wand

  Ignore 5% targets dodge.
• Moai Flagon

  Increase Max. HP by 3%. Reduce damage taken by 100.
• White Metal Hammer
• S50 Blood Shade Magatama

  Created with blood and molten lava, the blood shade magatama consumes the life force of anyone with malicious intent. Has a 8% chance to absorb 10% of the attackers max HP and 8% chance to convert any damage taken to HP.
• Grand Light Gourd

  Increase 3% damage
• Mimosa
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• S66 Dark Wings

  Remnants of a powerful dark spirit. Increases attack and critical rate by 4%. Increases accuracy by 5%.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Straw Hat

  Increase dodge rate by 3%.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Universal Backpack

  Increase healing power of scrolls by 100%. Each turn recover 140 HP.
• Black Silver Electric Guitar
• S14 Yabusa Knife

  Increases 4% attack damage and ignore 4% of targets dodge.
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Curved Spear
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.