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 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.
• S67 Omni Cloud

  Increase accuracy by 6% and dodge rate by 5%.
• Christmas Treasure Bag

  Increase agility by 1.
• S12 Blood Evil Gourd

  Increase max. HP by 5%.
• Call of the Angel

  Reduce damage taken by 100. Has 6% chance to convert damage taken to HP positively.
• Sakura Straw Hat

  Recovers 2% of users max HP every turn.
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• S81 Wheel of Glory

  Reduce damage taken by 200. Increase Combustion chance by 15%. (Minimum requirement of 1 Attribute Point in Fire to activate combustion effect)
• Toxic Village Poison Potion
• Hide Guitar
• Mirror of Thousand Hands
• Water Shark Skis
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Spirit Flag

  An inspiring banner that boosts the holders morale. Increase critical chance and dodge rate by 3%.
• Spinning Wheel

  Recover user's max HP by 1% each turn. Increases user's max CP by 2%. Converts 10% of damage taken into CP.
• Decorate Battle Umbrella
• 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.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Scroll: Taiin
• S46 Holy Drum

  Reduce damage taken by 4%. Increase chance to restrict enemy for 1 turn by 20%. Targets with “Restriction” will not be able to use any skills.
• S68 Supreme Faerie Wings

  Recover 20% extra CP when charge. Has 10% chance to convert damage taken to HP positively.
• Raccoon Tail
• Bell of Fortune

  6% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Turkey Balloon

  Reduce damage taken by 7%. Recover 10% extra CP when charge.
• 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%.