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 :

• Jaws

  Ignore 4% targets dodge.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• S69 Skull Cloak

  Increases Max. HP by 4%. Restores HP by 4%. Increase attack damage by 6%.
• Purple Dragon umbrella
• Pirate Skull Flag

  Increase 6% purify chance. Reduce damage taken by 5%.
• S11 Tensho Compass

  Increase attack damage by 4%, and recover HP by 1%.
• Blizzard

  Increases users agility by 1. Has 7% chance to convert damage taken into HP.
• Three Ring Magatama

  Increase 2% accuracy.
  Additional 12 HP damage upon all attack.
• Tail of Hachibi

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

  Increase 3% damage made, recover self 2% HP each turn.
• Dragon Crucifix Spear
• Ichimoku Gourd
• S9 Warring Empire Bulwark

  A strong and sturdy shield. Reduces damage taken by 35% but reduces the user's agility by 15.
• Poor Bag

  7% chance to convert damage taken to HP positively. Reduce damage taken by 5%.
• Mini Octopus
• S54 Ebony Nunchaku

  Increases damage by 7%. Has 20% chance to apply Restriction on enemies who attacks the user for 1 turn.
• Sweet Treat

  Increase critical chance by 2% and dodge rate by 3%.
• Wood Top
• Shinobi Curse Battle Umbrella
• Knot of Avenger

  20% chance to absorb 2% HP of enemy who attack you. 20% chance to restrict enemy who attack user for 1 turn. (Restriction) target will not be able to use any skills.
• S11 Wood Spirit's Shield

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

  Reduces damage taken by 3%. Converts 9% of damage taken into CP.
• Drum: Ako
• Sealing Pot

  Increases Max. HP by 4% and recover 3% HP 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.
• S13 Kishu Twin Blades

  Increase accuracy by 8%
• Mother's Hug (II)

  Recover 150 HP and 3% HP at the start of every turn.