is the melee version using (melee shadow damage), Shadow Image and . is the caster version, from what we have seen she is using 2 abilities (and probably some more): -
, Healing effects reduced by 4% for 3 min. Stacks up to 25 times. -
, 200 Fire damage inflicted every 3 sec for 3 min. Stacks up to 25 times. 
from Vis Maior Live Stream:
"4 locks rotating on alythess and a shadow res tank on sacrolash?
seems way to easy even compared to twin emps... Atleast they changed place, healed eachother and had tons of bugs you had to kill, but all you can see is the fire patches (hello al'ar) and that melee needs to be really fast to move out of shadowfury?"
Abilities
Grand Warlock Alythess
- Pyrogenics - A buff on Alythess increasing all Fire damage of spells and effects done by her with 35%.
- Flame Touched - A stackable debuff causing 250 Fire damage every 3 seconds. Stacks up to 20 times or a maximum of 5000 per 3 sec. Can only be removed by being hit with Shadow damage.
- Conflagration - A debuff placed on a random target within 30 yards dealing 1600 Fire damage every second. In addition, it confounds the target for 6 seconds and scorches nearby players within 8 yards for 300 Fire damage each second.
- Blaze - Causes 5525-7475 Fire damage (2.5 sec cast time).
- Flame Sear - A debuff placed on 3 random players dealing 1300 Fire damage every second for 6 seconds for a total of 7800 Fire damage.
- Confounding Blow - Confounds the target for 6 seconds, dealing 7353-9947 Shadow damage. Cannot occur more than once every 25 seconds. Any aggro the target had will be lost.
- Dark Touched - Healing effects reduced by 5%. Stacks up to 20 times, or a maximum of 100% healing reduction for 3 minutes. Any Fire damage taken removes the effect.
- Shadow Blades: An attack dealing 2550 to 3450 physical damage. Also applies
Dark Strike, instantly dealing 1530 to 2070 Shadow damage and slowing the target by 10% for 10 seconds. Stacks up to 5 times, the timer is updated on each new stack. - Shadow Nova - A nova type ability dealing 3238 to 3762 Shadow damage to every player within a 10 yard radius. Cannot occur more than once every 30 seconds.
- Shadow Image - Lady Sacrolash randomly spawns multiple Shadow Images which die on their own after a short amount of time. They cannot be targeted, and will typically only do one of their available attacks on a random player.
- Melee attacks causes the target to become Dark Touched.
- Shadowfury - Causes 1826 to 2174 Shadow damage and stuns the target for 2 sec.
