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 :

• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• Virgos Eternal Wings

  Increases agility by 1. Increases users attack damage by 3%.
• Decorative Rope
• Chakra Kanawa

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• 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.
• Mirror of Thousand Hands
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• Blue Shell
• Yatai Lantern
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Mini Goldfish
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Scroll: Grassland
• Ninjas Stocking

  Increase 5% Combustion chance and attack damage by 3%.
• Light Cry Raijinco
• S77 Curse Dragon

  Increases attack damage by 9% and critical damage 10%.
• 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%
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Blood Brush

  Increase 3% damage and increase healing power of scrolls by 10%.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.
• Cheerful Snowman

  Increase Max. CP by 20%. Recover 2% HP at the start of every turn. but reduce max. HP by 12%.
• S71 Magic Clock

  Increases Max. CP by 10%. Recover CP after HP reduction. (Amount: 20% of HP reduction)
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.