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 :

• Hide Guitar
• Toxic Mushroom

  Increases damage by 10% but the user takes 200 HP damage every turn.
• Bear of Affection

  Increase dodge rate by 3% and ignore target dodge by 3%.
• Orange Kikyo Skis
• Fathers Treasure

  2014 Fathers Day special back item. Doubles the TP reward from TP missions.
• Choco Tama

  Increase accuracy by 5% and increase healing power of scrolls by 25%.
• Mech of Battle Gear

  Increase critical chance 3% and critical damage 8%.
• GM back item
• S52 Gold Dragon Scroll

  Reduce damage taken by 7%. Ignore targets dodge rate by 5%.
• Scroll: Messenger

  Increase 2% accuracy.
  Reduce 20 HP damage taken.
  Recover 35 HP when each turn start.
• S51 Enchanted Winged Carapace

  Increases accuracy by 3%. Recover 4% HP at the start of every turn.
• Apricot Pipa
• Blessed Kitty

  Bless on his master everyday, which increase 3% damage. Heal 1% HP in every turn.
• First-Aid Kit

  100% of the purchase price will be donated to Japan earthquake relief.
• Water Energy Skis
• S11 Wood Spirit's Bow

  Increase critical chance 13%.
• Radish Launcher

  It will fly you to the moon! (Easter 2011 Limited Edition)
• Ninja Postman Bag

  Increase healing power of scrolls by 50%.
• S3 Fossil of Magatama

  Increase purify chance by 6%. Has 10% chance to convert damage taken to HP positively.
• FIFA Whistle

  Recover 100 CP at the start of every turn and reduces damage taken by 80.
• Curved Spear
• 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.
• Christmas Wreath

  Increase agility by 1 and Max HP by 1%.
• Large Wooden Hammer
• Ninja Snowman

  3% chance to convert damage taken to HP positively.
• Griffin Thunderball

  Increases critical rate by 3% and dodge rate by 3%.
• Smart Phone