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 :

• Colorful Snowflake

  Increase agility by 1. Has 15% chance to freeze enemy who attacks user (2 turns). Frozen target cannot move but damage taken is reduced by 80%.
• Spartan Shield

  Restore 100 HP every turn. Reduce damage taken by 5%.
• Wings of Eternal Eclipse

  Increases critical chance by 3%. Ignores 6% of the targets dodge rate.
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Chakra Magatama

  Increase 2% accuracy.
  Additional 5 HP damage upon all attack.
• S18 Evil Spirit Shield

  Reduce 14% damage taken.
• S72 Hero Twin Axe

  Increase 12% Combustion Chance and recover 3% HP at the start of every turn. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Twins Sakura

  Ignore 5% targets dodge.
• S41 Dragon Gunnery

  Increase 25% Combustion chance, Ignore enemys dodge rate by 5%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• Tail of Jyubi

  Forged with chakra of the legendary tailed beast, Jyubi. Increase attack damage by 15% but reduce max. CP by 30%.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• Large Wooden Hammer
• Carp Flag
• Scroll: Yinyang Seal
• Swire Raijinco
• S48 Titans Hammer

  The hammer used by titans to destroy castles in ancient times. Increases attack damage by 8% and accuracy by 5%.
• S45 Oblivion Ward

  Increases Max. HP by 3% and Max. CP by 6%.
• S40 Gozen Breeze Back Item

  Recover 7% HP with every Charge.
• S12 Ancient Blood Evil Gourd

  Increase max. HP by 5%. But reduce Max.CP by 1%.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Christmas Treasure Bag

  Increase agility by 1.
• Dragon Crucifix Spear
• Leos Recurve Bow

  Increases damage by 4% and dodge rate by 1%.