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 :

• Scroll: Yinyang Seal
• Dark World Hammer
• 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)
• Ukon Three Blades
• Folding Fan: Shino
• War Flag: Furinkazan
• S83 Four Wings

  Increase dodge rate by 8%.
• Thanksgiving Balloons

  Increase max. HP by 2%.
• Victorious Crown

  Increases accuracy by 4% and recover HP by 3%. Has 13% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Engagement Ring

  Additional 20 HP damage upon all attack.
• Charming Aura (Red)

  2012 Valentines day limited aura, increase all damage 2%.
• Black Koi
• Scroll: Genbu
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Hanami Folding Fan

  2011 Hanami Festival - Usagi! Increase dodge rate and critical rate by 3%.
• Purple Dragon umbrella
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Karasu Miya Falcon

  Increase dodge rate by 6%.
• Sack of Hearts

  Cupids sack of hearts. Recovers 3% HP every turn. Has 5% chance to convert any damage to HP.
• Hanami Fan

  Ignore 4% targets dodge and increase max. HP by 2%.
• Firefox Tail
• S4 Bladed Wings

  Reduce damage taken by 400. Recovers 1% of the user's max HP
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Taoist Spirit Stone

  Increases Max. HP by 3% and Max. CP by 5%. Increase purify chance by 1%.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• S14 Profound Tentacles

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