TEXT: Baido’Ken, Ikitebuki (Void Sword, the Living Weapon) 
  Boido’Ken is seemingly a standard katana; however, it possesses a life of its own and powers 
  beyond that of the imagination.  
  Sealed Item (One-handed Katana, uncraftable) 
  Epic (Lvl 35) +2 DC 40 
  Enhancement: Attack and damage rolls 
  Property: Baido’Ken is extremely taxing and difficult to use in combat due to its parasitic abilities. 
  The wielder can only use it for a number of rounds equal to 2 plus his Constitution modifier before 
  becoming fatigued. 
  Property: When the wielder uses Baido’Ken, it drains the wielder’s chakra at a rate of 2 points 
  per round of combat. If he is out of combat, the wielder can purposely store chakra into the sword 
  to be used at a later time. Feeding Baido’Ken takes concentration and therefore the wielder must 
  stay still while transferring chakra to the blade. He can transfer 5 points of chakra per minute of 
  concentration. To ensure the blade does not overpower and drain all of the wielder’s chakra, the 
  wielder must make Chakra Control checks (DC 20) every minute. Failing will result in a massive 
  chakra depletion (5d8 chakra points) and the wielder will become instantly fatigued. The blade 
  may store up to 40 chakra at a time, but loses 10 chakra per day if not used.  
  Power (At-Will, attack action, full-attack action): Baido’Ken has the innate ability to send 
  shockwaves of chakra at its victims. The wielder can spend his attack action to do this or use this 
  ability as part of a full-attack action. Either way, the wielder slashes in the direction of his enemies 
  and forces a cone-shaped burst (15-foot range) of chakra that deals 4d8 damage. Anyone in the 
  line of effect may make a Reflex save (DC 20) to half the damage. This ability costs Baido’Ken 5 
  chakra per use. This ability can only be used once every 1d4+1 rounds. 
  Power (1/ 2 rounds, defensive maneuver): After Baido’Ken has become affiliated with its host 
  and source of food, it will attempt to protect him at all cost. Once every 2 rounds, for as many 
  times per day the wielder can use a defensive maneuver, Baido’Ken will block a single melee or 
  ranged attack. If this ability is used, Baido’Ken will be unable to use any other abilities for 1 round 
  in order to recharge. This ability costs Baido’Ken 5 chakra per use.  
  Special: This item cannot be crafted. Baido’Ken is considered a living weapon and thus, it has a 
  specific personality. It may communicate with the wielder mentally (GM Discretion). 
  
SOURCE: textdata/thevault/Naruto [multi]/Naruto (d20)/Baido-Ken.pdf