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 :

• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• S13 Slaughter Double Sickle

  Recover HP by 1%. 20% chances of using Jutsu without CP.
• Holy Wings

  Increase accuracy by 4% and dodge rate by 3%.
• Beast Mace
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Light Cry Raijinco
• Dark Blade

  Increase 2% critical rate and ignore 2% of targets dodge.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%. But reduce critical chance by 1%.
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Skull Twins

  7% chance to convert damage taken to HP positively and 20% chance to absorb 1% HP of enemy who attack you.
• S20 Empire Battle Gear

  6% chance to convert damage taken to HP positively.
• Scroll: Kochin
• Enternal Love Scroll

  Increase 5% Combustion chance and reduce 1% damage taken.
• Butterfly Wings
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Red Shell
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Yawata Magatama

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• Red Koi
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• GM Goldfish

  GM Goldfish
• GM Phone

  GM Phone
• Sealed Wood

  A back item which lost the original effectiveness.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.