Idea for an Undead pet based build for League 3, as I haven't seen any legendary RE's for it.
When Sudden Death is triggered, You gain the appearance of your undead pet and 10% of its health for 30 seconds. (Size adjusted to pet size or Tauren height?)
Attack power is increased by 5% and Execute applies rend and infected wounds. Allows the use of Ravage, Savage Roar, and Lacerate while in this state.
Each debuff and bleed applied from you on the target decreases their attack speed by 2% and increases your by 2%
If you or your pet are killed in this state, your pet explodes into a toxic mist, casting Mind Blast to your target, as well as Corruption and infected wounds to 3 targets.
Epic RE's for this build:
Epic RE synergy: Gates of the Underworld
Your Undead pet is revived upon death with 10% health. All effects cast by your pet prior to revival have their duration reset and pet Spell Crit is increased by 10%
Pet damage is increased by 10% when health is below 10% health. This effect can only occur twice in a row until a 1 min cooldown is triggered.
Epic RE synergy: Hasty Homicide
Ravage no longer generates combo points and damage is reduced by 25% but now costs 30 rage and teleports you behind target if used after charge.
Epic RE Synergy: Suicidal Brainiac
Lacerate applies a 5 combo point Rip to target. 300% of this damage is received by your undead pet. Holy damage received by undead pet increased by 50%
20% of damage received on death goes to the attacker.
The goal of this build is to make your undead pet die as much as possible, as it deals decent bursts of single target and AOE damage upon death and can be revived instantly with low health.
P.S. Replace Savage Roar in LRE with Rip. My mistake.