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 :

• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• Wooden Hammer
• Scroll: Kochin
• Falcon
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.
• Axe Hammer suit

  Increases damage and accuracy by 6%. Recover 50 HP at the start of every turn.
• Blue Cloud Umbrella

  Ignore 6% targets dodge.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Chakra Message Stick
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Egg Hunter Basket

  Increase 6% accuracy. (Easter 2011 Limited Edition)
• S32 Black Senbu

  Recover HP by 4% and reduces damage received by 3%.
• S63 Stormbringer

  Increases dodge rate by 5%. Has 50% chance to absorb 2% HP of enemy who attack you.
• Samurai Painted Wood

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

  Reduce 46 HP damage taken.
• S13 Slaughter Giant Axe

  Increase max.HP by 20% but reduce max. CP by 35%.
• Native Drum

  5% chance to convert damage taken to HP positively.
• S17 Scorching Sun Scroll

  Has 30% chance to absorb 1% HP of enemy who attack you.
• Training Dummy

  Increases accuracy by 5% and dodge rate by 4%.
• S49 Serpent Dragon Chakram

  An exceptional weapon crafted with serpent and dragon remains. Increases agility by 1 and accuracy by 7%.
• Seal Nightmare Wing

  Ignore 4% targets dodge.
• Beast Mace
• Ronin Idol

  Reduce damage taken by 100 and restores 4% of users max HP.
• Tail of Hachibi

  Forged with chakra of the legendary tailed beast, Hachibi. Increase critical chance by 15% but reduce max. HP by 20%.
• S10 Kikyo Umbrella

  6% chance to convert damage taken to HP positively.
• S11 Wood Spirit's Shield

  Increase max. HP by 9% and 20% chance to absorb 3% HP of enemy who attack you.