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%.
• Businessman Luggage
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Straw Hat

  Increase dodge rate by 3%.
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Minotaurs Horn

  Recover 350 HP at the start of every turn. Has 15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Folding Fan: Shino
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Vampire Cloak

  Increase healing power of scrolls by 100.
• Prestige Purple Dragon

  Increase attack damage by 5%. Recover 100 HP at the start of every turn.
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Black Double Gun

  Ignore enemys dodge rate by 3%. Increase accuracy by 3%.
• Force of Taotie

  Reduce damage taken by 7%.
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Master Scroll

  Restores HP & CP by 3%.
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Angel Heart (White)

  16% chance to absorb 2% HP of enemy who attack you.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Grave of the Undying

  Increase purify chance by 8%, but decrease agility by 15.
• GM back item
• Drum of Euphoria

  Recover 3% HP at the start of every turn, and recover 3% HP with every Charge.
• Iron Tortoise Shell

  Reduce damage taken by 200.
• Smart Phone
• Butterfly Wings
• Fairy Wings

  Fairy wings that owned by a fairy
• Golden-bound Cudgel
• Sand Gourd