Grand Widow Faerlina

Prior to the encounter, Grand Widow Faerlina will be in the room, with 4 Naxxramas Worshippers (Heroic: and 2 Naxxramas Followers) around her. One tank will take Faerlina away from her adds, while the other tank keeps the adds on him/her, lowering their health, but not killing them. Every minute or so Faerlina will go in Frenzy, increasing damage and attack speed. Triggering Widow's Embrace by killing a Worshipper (Heroic: Mind Controlling Worshipper, and activating the spell), will remove the Frenzy effect and silence Faerlina's Poison Bolt Volley. The DPS will need to be able to quickly switch to a Worshipper during Frenzy, and stay out of the Rain of Fire.

Poison Bolt Volley - Faerlina will launch a Poison Bolt Volley, hitting the 3 closest to her players for 2,625 to 3,375 (Heroic: 3,375 to 4,125) Nature damage, and applying a removable DoT, that ticks for 1,480 to 1,720 (Heroic: 1,900 to 2,100) Nature damage every 2 seconds for 8 seconds.
Rain of Fire - Faerlina will cast Rain of Fire almost randomly, hitting players within 8 yards from each other, for 1,850 to 2,150 (Heroic: 3,700 to 4,300) Fire damage every 2 seconds for 6 seconds.
Frenzy - Faerlina will go in Frenzy every 60-80 seconds, increasing her attack speed by 50% (Heroic: 75%), damage done by 150%, and size by 50%. She will also gain the typical for Enrage effects' red color. Killing a Naxxramas Worshipper (Heroic: Mind Controlling a Worshipper and activating the spell) after she uses Frenzy will remove the effect, and prevent her from casting Poison Bolt Volley for 30 seconds.
Naxxramas Worshippers will use Fireball, doing 2,025 to 2,475 (Heroic: 2,475 to 3,025) Fire damage to their tank.
(Heroic Only) Naxxramas Followers will use Berserker Charge on a random player out of melee range, and a 6-second Silence around themselves.