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 :

• Venom Ghost

  Has 5% chance to convert damage taken to HP positively. Recover HP by 100 every turn.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Decorate Battle Umbrella
• Osuzu Shinsen

  Ninja Saga 2nd Anniversary Carnival! Increase all attack damage by 5%.
• Water Energy Skis
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Love Ribbon

  Additional 40 HP damage upon all attack.
• Cornucopia

  Increase healing power of scrolls by 100%. Has 6% chance to convert damage taken to HP positively.
• Mousetrap

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

  2011 Hanami Festival - Shine! Reduce damage taken by 15.
• Hanami Folding Fan

  2011 Hanami Festival - Usagi! Increase dodge rate and critical rate by 3%.
• Black Koi
• Orange Kikyo Skis
• Love Missile

  Additional 60 HP damage upon all attack.
• New Year Kadomatsu

  Recover 100 HP and 100 CP at the start of every turn.
• Paper Windmill

  Additional 20 HP damage upon all attack.
• Scroll: Posion Attack
• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• 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%.
• Ishiyama Lantern

  Reduce damage taken by 49.
• Yawata Magatama

  Increase 3% accuracy.
  Additional 20 HP damage upon all attack.
• S24 Junsei Ring

  Increase max. HP by 5%.
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Flame Blade Raijinco
• Great Wooden Hammer (3 Days)

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• S18 Kamimachi Lantern

  Increase 4% critical rate and recover HP by 1%.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)