Cervantes, King of Thieves

Weapon (wakizashi/scimitar), legendary (requires attunement by a creature of chaotic alignment)

Deep in the Underdark, in the center of the theives' guild of an ancient civilization, the bones of a great thief sit in the shadows. Clutched in his hands is the sword that trapped his soul, Cervantes, King of Thieves. Its jet black blade warns those who see it of the darkness they will find in death and its deep red scabbard evokes the blood spilt from those who did not heed the warning.

You gain a +1 bonus to attack and damage rolls made with this magic weapon. It has the following additional properties.

Thieves' Guile. The title King of Thieves is not casually given. Even after a millennia of imprisonment, the skills the thief acquired in life are still as sharp as the blade which is his prison. You gain a +3 bonus to Dexterity (Sleight of Hand) checks while you are attuned to this weapon and are not in conflict with it.

Cervantes can cast pass without trace and find traps. It can cast each spell it knows once per day. It decides when to cast a spell and, if necessary, maintains concentration on it so you don't have to.

Thieves' Desire. Naturally, Cervantes craves gold, precious gems, and magical items. Over the course of an hour, you can make an offering to the blade to increase its power by earning favor with it as described by the Favor table below.

Favor

Favor Offering 1 A common magic item or 500gp worth of coins or gems 4 An uncommon magic item 8 A rare magic item 16 A very rare magic item 48 A legendary magic item

Each 12 points of favor earned grants Cervantes an additional property. The DM chooses each property or determines it randomly by rolling on the Properties table.

Properties*

d100 Property 01-40 Increase the bonus to attack and damage rolls by 1, to a maximum of +3. Reroll if Cervantes already has a +3 bonus. 41-60 Increase the damage die of Cervantes to 1d8. If the damage die is already 1d8, increase it to 1d10. Reroll if the damage die is already 1d10. 61-75 Cervantes gains the ability to produce an illusory copy of itself. As a bonus action, you can request Cervantes summon a copy, which you may use to make an off-hand attack. The copy is identical to Cervantes except that it gains the thrown property (range 20/60 feet). The weapon dissipates at the end of your turn. Reroll if Cervantes already grants this feature. 76-85 Cervantes learns one of the following spells: grease, fog cloud, silence. Reroll if Cervantes already knows all these spells. 86-95 Cervantes learns invisibility (can only be cast at 2nd-level). Reroll if Cervantes already knows invisibility. 96-00 Cervantes learns passwall. Reroll if Cervantes already knows passwall.

*Subject to change

Sentience. Cervantes is a chaotic neutral weapon with an Itelligence of 11, a Wisdom of 12, and a Charisma of 16. It has hearing and darkvision out to a range of 120 feet.

The weapon can speak, read, and understand common, undercommon, and thieves' cant. Its voice is seductive and charming.

Personality. While Cervantes is drawn to those with a penchant for chaos, shannanigans alone are not enough to keep it sated. At its core, Cervantes desires riches more than anything. If the sword goes 45 days without receiving an offering, a conflict arises with its wielder. However, if the sword feels its wielder is incompetent or boring, then a conflict may arise in as little as 15 days.

Additionally, after a thousand years of isolation, Cervantes also craves attention. Being left alone for too long or seeing its wielder use any other melee weapon will also cause a conflict.

If left in conflict for too long, Cervantes will actively seek another wielder.

While not in conflict, Cervantes is exceptionally loyal. It will only attune to another wielder with a credible promise of at least 50,000gp or a legendary magic item.

When its not being used for slashing, Cervantes loves to regale all who will listen with tales of its former life as the King of Thieves. While the veracity of its stories may be questionable, they are always entertaining.