In Heroic difficulty four slimes answer Yor'sahj's call.

• Fusing Vapors – The blood globules emit a fusing vapor when damaged below 50% health that heals all other active globules for 5% of their maximum life.When one globule dies, the surviving globules completely fuse and gain immunity to all forms of damage.
• Glowing Globule – When a Glowing Globule reaches Yor'sahj, it infuses Yor'sahj with the Glowing Blood of Shu'ma.

  • Glowing Blood of Shu'ma – Yor'sahj's Void Bolt now hits all nearby targets for 33300 to 38700 Shadow damage in addition to the primary target component, Yor'sahj uses his abilities twice as often, and his attack speed increases by 50%.
• Cobalt Globule – When a Cobalt Globule reaches Yor'sahj, it infuses Yor'sahj with the ability to summon Mana Voids.

  • Mana Void – A Mana Void leeches all the mana from every ranged spell caster and healer, storing the mana within itself. Destroying the Mana Void evenly returns the total of the leeched mana via Mana Diffusion to players within 30 yards.
  • Mana Void – A Mana Void leeches all the mana from every ranged spell caster and healer, storing the mana within itself. Destroying the Mana Void evenly returns the total of the leeched mana via Mana Diffusion to players within 100 yards.
• Crimson Globule – When a Crimson Globule reaches Yor'sahj, it infuses Yor'sahj with the Searing Blood ability.

  • Searing Blood – Yor'sahj sears the blood of three random players, inflicting a base of 35000 Fire damage. The further the target stands from Yor'sahj, the greater shock received from the blast.

    In 25 player raids, Yor'sahj sears the blood of eight random players.

• Dark Globule – When a Dark Globule reaches Yor'sahj, the corruption of the blood seeps out into the Maw of Shu'ma. This vile corruption then periodically creates Forgotten Ones that attack the players.

  • Forgotten One – These creatures fixate on a random target.

    • Psychic Slice – The Forgotten One emits a wave of psychic force at its current target, inflicting 55770 to 58630 Shadow damage.
• Acidic Globule – When an Acidic Globule reaches Yor'sahj, the Maw of Shu'ma infuses with the acidic blood and stimulates further Digestive Acid production.

  • Digestive Acid – Digestive Acid periodically secretes from the stomach lining, inflicting 58500 to 61500 Nature damage to a player and nearby allies within 4 yards.
  • Digestive Acid – Digestive Acid periodically secretes from the stomach lining, inflicting 58500 to 61500 Nature damage to a random player.
• Shadowed Globule – When a Shadowed Globule reaches Yor'sahj, it infuses Yor'sahj with the Deep Corruption ability.

  • Deep Corruption – Yor'sahj's Deep Corruption spreads to every player, causing every fifth healing or absorbtion effect cast on a player to trigger a violent detonation, inflicting 46250 to 53750 Shadow damage to all players.