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 :

• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Scroll: Double Head
• Ichimoku Gourd
• Water Energy Skis
• Mech of Wing

  Reduce damage taken by 10%.
• Sakura Fan

  Recover 20 HP and 150 CP at the start of every turn.
• Lucky Chess

  Has 5% chance to freeze enemy who attacks user (3 turn). Frozen target cannot move but damage taken is reduced by 80%. Each turn recover 100 HP and 100 CP.
• Great Wooden Hammer

  Increase healing power of scrolls by 50%.
  Reduce 8 HP damage taken.
• Red Koi
• Paper Envoy of God

  Increases attack damage and reduces damage received by 4%
• Sakura Dance

  Increase damage by 3% and max. HP by 4%.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Carnival Taiko

  Play the Taiko in Ninja Saga Anniversary Carnival! Recover 5 HP and CP at the start of every turn.
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• Shadow Umbrella
• Santa Gift Bag

  Reduce damage taken by 30.
• Water Shark Skis
• Dark World Hammer
• S3 Energetical Can

  Increase attack damage by 10% and Combustion chance by 18%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• S78 Wandering Soul

  Recover CP after HP reduction. (Amount: 15% of HP reduction) Recover 15% extra CP when charge.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Ninja Bunny Doll

  Increase 2% damage and ignore 3% targets dodge.
• War Flag: Furinkazan
• S5 Umbrella of Spiritual Pulse

  Recover CP after HP reduction. (Amount: 10% of HP reduction) Recover 5% CP every turn if current CP is less than 50%. Has 8% chance to reduce skill cooldown by 1 turn at the start of each turn. (Not effective on talent skills)
• Native Horn

  Increase max. CP by 3%, Recover 1% HP with every Charge.
• Flame Blade Raijinco
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.