Soul Reaper

Soul Reaper, also known as Boss Slayer, is an activity set for release in August 2014 that will involve the player helping Harold Death Esquire - more commonly known as Death - harvest the souls of various boss monsters. Death tasks players with "reaping" various boss monsters in special assignments, which reward slayer experience and points that can be spent on a number of things, including Hydrix gems, a new title, and a set of cosmetic gear.

Getting a task
To start a task, a player must visit Death's office via a portal next to the Draynor Village lodestone, and then speak to him to obtain your task. Note that a task may be rerolled up to five times per day, but doing so diminishes the point rewards, excluding the first reroll.

Assignments
Death may assign the following boss monsters.
 * Araxxor and Araxxi
 * The Barrows Brothers
 * The Barrows: Rise of the Six
 * Chaos Elemental
 * Commander Zilyana
 * Corporeal Beast
 * Dagannoth Kings
 * General Graardor
 * Giant Mole
 * Har-Aken
 * Kalphite King
 * Kalphite Queen
 * King Black Dragon
 * Kree'arra
 * K'ril Tsutsaroth
 * Legiones
 * Nex
 * Queen Black Dragon
 * TzTok-Jad
 * Vorago

Rewards
In addition to slayer experience, a number of rewards may be purchased from the reward shop, which have a number of requirements. Note that unlocking all permenant rewards is a requirement for the trimmed completionist cape.

Consumables:
 * Aura refresh (25-70 reaper points, 375-1050 regular slayer points) - Resets the cooldown on an aura of the same tier as the one bought once per day.
 * Death's deal (200 reaper points, 3000 regular slayer points) - Reduces the degradation of armor and weapons by 50% on your next death.
 * Incomplete hydrix (600 reaper points) - Tradeable gem that can be combined with a cut onyx to make a hydrix which can be used to make better jewellery.
 * "The Reaper" title - Requires killing all of the bosses assigned by Death at least once. Unlocking this title is a requirement for the completionist cape.
 * Vanquisher's armour - Cosmetic overrides unlocked for getting a set amount of kills overall and on each boss.

Permanent rewards:
 * Rainbow lootbeams (75 reaper points, 1125 regular slayer points)
 * Additional tasks (100 reaper points) - Unlock the ability to buy further reaper assignments with slayer points.
 * Bonfire booster (100 reaper points, 6000 regular slayer points) - Permanently increase the duration of bonfire health boosts by 25%.
 * Instance cost (400 reaper points) - Permanently reduce the cost of boss instancing by 25%.