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 :

• S1 Helianthus

  Restores HP & CP by 5%. Increase purify chance by 5%.
• Dark Secret Seal

  Increases critical chance by 4%. Has 12% chance to Restrict anyone who attacks the user.
• Mercy Of Libra

  Recover 2% HP at the start of every turn. And recover 3% HP with every Charge.
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• S31 Yabusa Dual Head Spear

  Increase 4% damage and 4% critical rate.
• S7 Gorgeous Butterfly

  Increase agility by 2. Recover 20% extra CP when charge.
• Emblem backpack (Yellow)

  Double mission XP reward in level 1 to level 20.
• Water Energy Skis
• Colorful Moai Egg

  Reduce damage taken by 100 and recover 10% extra CP when charge.
• Mother's Hug

  Recover 100 HP and 2% HP at the start of every turn.
• Karasu Miya Falcon

  Increase dodge rate by 6%.
• Peom Fan

  Reduce 46 HP damage taken.
• S27 Golden Gourd

  Recover 5% HP with every Charge.
• S8 Sign of Corruption

  Wings with an ominous aura. Increases agility by 3.
• Dark Evil Sickle

  Exclusive Halloween item - the devils sickle that has 10% chance to absorb 1% HP of enemy who attack you.
• Chakra Message Stick
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• S19 Magatama Soul Barrel

  Increase 4% critical rate and ignore 4% targets dodge.
• Dark Cry Raijinco
• S12 Golden Bujin Jitte

  Increase dodge rate by 10%.
• Golden Torch of Zeus

  Recover 150 HP every turn
• Dual Blade of Fire

  Increase 3% damage made, recover self 2% HP each turn.
• Jingle Bell

  Reduce 2% damage taken. Recover 3% HP at the start of every turn.
• Gunbai: World Peace
• S16 Umbra Fire Wheel

  Additional 170 HP damage upon all attack.
• Red Koi
• Grand Light Gourd

  Increase 3% damage