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 :

• S10 Frostguard's Shield

  Shield of the valiant warrior Tundra. Increase agility by 2. Has 17% Chance to stun target when attack with weapon for 1 turn.
• Snowflake

  3% chance to freeze enemy who attack user (1 turn). (Frozen target cannot move but damage taken is reduced by 80%.)
• Kettle
• Golden Torch of Zeus

  Recover 150 HP every turn
• Wind Storm Raijinco
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• S62 Black Steel Swords

  Restores 5% of users max HP.
• Harvest Treasure Bag

  Reduce damage taken by 140. Recover 5% extra CP when charge.
• Ronin Straw Hat

  Additional 100 HP damage upon all attack.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• S14 Profound Tentacles

  35% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• Scroll: Double Head
• Sakura Rain Battle Umbrella
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP at the start of every turn.
• Dark Blade

  Increase 2% critical rate and ignore 2% of targets dodge.
• S64 Twin Pinnacle Spear

  Powerful spears that can pinpoint enemy's weaknesses. Increases accuracy by 12%. But reduce self dodge rate by 5%.
• Red Shuriken Skis
• Christmas Deer

  Increase critical chance 2% and critical damage 6%.
• Flag: Dragon Symbol
• S83 Four Wings

  Increase dodge rate by 8%.
• S12 Golden Bujin Ax

  Increase attack damage by 20% but increase damage taken by 12%.
• Angel Wings

  Increase 3% attack damage and ignore 3% targets dodge.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• S60 Amber Jewel Wings

  Increases attack damage by 10% and increase 5% Combustion chance.
• Universal Saber

  Increases users agility by 1. Recover 150 HP at the start of every turn.
• Shigu Twin Blades
• Mischievous Candy

  Increase accuracy by 3%. Increase healing power of scrolls by 50%.