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 :

• Tail Hunter Back Item

  Increase max. HP by 3%.
• Sengoku Flag

  Increases damage by 4%. Each turn recover 120 HP.
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Scroll: Kochin
• Jaws

  Ignore 4% targets dodge.
• Black Silver Electric Guitar
• S38 Genrei Fan

  Increase max.CP by 50% but reduce max. HP by 20%.
• S28 Orochi Statue

  Increase attack damage by 4%, and recover HP by 1%.
• Purple Mixing Yellow Umbrella
• Genin backpack (Blue)

  Double mission XP reward in level 11 to level 20.
• Sakura Rain Battle Umbrella
• S33 Book of Fate

  Increase Max. HP & CP by 4%
• Little Shikigami

  Increases accuracy by 5%. Adds 80 damage in all of your attacks.
• Successor Fan

  Restores HP & CP by 2%. Has 7% chance to freeze enemy who attacks user (2 turn). Frozen target cannot move but damage taken is reduced by 80%.
• Folk Folding Fan
• Red Koi
• Scroll: Fire and Earth
• Orange Kikyo Skis
• Father's Heart (II)

  Reduce damage taken by 7%. Reduce damage taken by 150.
• Mousetrap

  15% chance to restrict enemy who attack user for 1 turn. Restriction target will not be able to use any skills.
• Carnival Fan

  Dance with the Fan during Ninja Saga Anniversary Carnival! Increase all attack damage by 3%.
• S5 Possessed Koto

  Increase purify chance by 7%. Reduce jutsu CP consumption for 10%. Has 15% Chance to stun target when attack with weapon for 1 turn.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• S80 Struggle Flag

  Recover HP by 2%. Recover 7% HP with every Charge.
• Clouds And Mist Raijinco
• Folding Paper Fan
• S35 Mini Teiko

  Increase agility by 1 and ignore enemys dodge rate by 2%.