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 :

• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Hide Guitar
• Soul of Egg Hunting Beast

  2012 Egg Hunting Event
• Scroll: Red Curse seal
• S53 Frostfire Soul

  Increases combustion chance by 15%. Has a 10% chance to freeze enemies who attacks the user for 1 turn. Frozen targets cannot act but takes 80% reduced damage.
• Butterfly Wings
• Smoothbore Musket

  Increase 10% damage.
  Reduce 3% damage taken.
• Folding Fan: Shino
• Luckey windmill

  Each turn recover 120 HP and 120 CP.
• S39 Spike Hammer

  Increase accuracy by 10% but reduce max. HP by 10%.
• S15 Frozen Large Sword

  Increase 7% purify chance.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Fighting spirit Taiko
• Purple Mixing Yellow Umbrella
• Evil Claw Hammer

  Reduce 7 HP damage taken.
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• S36 Wind Chakra Magatama

  Increase accuracy by 3% and dodge rate by 3%.
• White Metal Hammer
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• Ichimoku Gourd
• Lucky Chess

  Has 5% chance to freeze enemy who attacks user (3 turn). Frozen target cannot move but damage taken is reduced by 80%. Each turn recover 100 HP and 100 CP.
• Swire Raijinco
• Thanksgiving Balloons

  Increase max. HP by 2%.
• 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.