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 :

• 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.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• S61 God Dragon Flag

  Increase critical rate by 6%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Hide Guitar
• S55 Mirror of Fantasy

  Increases damage by 6% and accuracy by 5%. Has a 7% chance to convert any damage taken to HP.
• S9 Warring Empire Guarding Bow

  An ancient enchanted bow with great range used in warfare. Increases accuracy by 10%. Restore 100 HP every turn.
• Wooden Hammer
• Ferret Tail
• Bat Back Item

  Back item design with reference from Halloween - Bats. Increase 5% dodge rate and decrease damage 5% at the same time.
• Nightmare Grudge

  Ignore 4% targets dodge.
• Flame Blade Raijinco
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• S15 Seitenken

  Recover CP after HP reduction. (Amount: 20% of HP reduction)
• S37 Ring of Chakra Flame

  Increase attack damage by 7%.
• Scroll: Fire and Earth
• Engagement Ring

  Additional 20 HP damage upon all attack.
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• Tailed Beast Chakra Crystal

  Increase 3% damage.
  Reduce 3% damage taken.
  Recover 2% HP each turn start.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• Charming Aura (Black)

  2012 Valentines day limited aura, increase critical chance 2%.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Tail of Hachibi

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

  Increase healing power of scrolls by 20%.
• Hanami Dango

  Reduces damage received by 7%. Restore 85 HP every turn.
• Umiyuki Painted Wood

  Reduce 24 HP damage taken.
• Scroll and Blade

  Has 11% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills. Increase critical rate by 5%. 8% chances of using Jutsu without CP.
• Drum: Ako