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 :

• Mini Goldfish
• 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.
• Decorate Battle Umbrella
• Great Wooden Hammer (7 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Chromaflake

  Increases damage by 5% and dodge rate by 3%.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• War Flag: Furinkazan
• Dragon Crucifix Spear
• Butterfly Wings
• S14 Ancient Yabusa Knife

  Increases attack damage 4% and ignore 3% of targets dodge.
• Yolanda Rescue First Aid Kit
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• 4th Anniversary Back Item

  Ninja Saga 4th Anniversary edition! Recover 50 HP and 150 CP at the start of every turn.
• Christmas Chimney

  4% chance to freeze enemy who attacks user (1 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Swordfish
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Magical Wreath

  Recover HP by 2% and reduce 4% damage taken.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• Cupid Wing

  Increase critical chance 4% and critical damage 10%.
• Assault Kite

  Recover 100 HP and 80 CP at the start of every turn.
• Nutcracker

  Increases Max. HP by 4% and damage by 3%.
• S10 Ancient Kikyo Umbrella

  6% chance to convert damage taken into health. But reduce Max.CP by 2%.
• S1 Angelic Silverware

  Increase dodge rate by 5%. Reduce damage taken by 9%.
• Chakra Message Stick
• S25 Musha Pipa

  Increase 4% critical rate and ignore 4% targets dodge.