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 :

• Lovely Santa Bag

  A bag that resembles Santa Claus, it emanates faint revitalizing aura. Restores 140 HP and 30 CP at the start of every turn.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Flame Soul Electric Guitar
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Civet Cat Tail
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Prestige Purple Dragon

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

  Amazing power from Neptune. 3% chance to convert damage taken to HP positively and recover 3% HP at the start of every turn.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Scroll: Taiin
• Blizzard

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

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Ancient Pipe

  5% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• S57 Magatama Gunbai

  Increases dodge rate by 5% and restores 4% of users max HP every turn.
• Super Rabbit Doll

  Increase damage by 9%.
• S75 Trifecta Swords

  It gives off a strange feeling of vigor. Restores CP by 3%. Increases max CP by 7%.
• Mini Evil Wing

  Exclusive Halloween item - the devils wings that frighten enemy, and hence reduce their damage done on you by 5%.
• Hanagara Hagoita

  Increase max. HP by 3%.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• S15 Frozen Huge Sword

  Recupera 26% extra CP en cada recarga.
• Crimson Lanterns

  Increase attack damage by 6%. Has 6% chance to convert damage taken to HP positively.