AoE Speed Run PVE

Synergies to consider:

Xyrella + Samuro --> Xyrella uses blinding luminance on a high priority target, Samuro follows up with double strike.

Cairne + Diablo + Thrall --> On turn 2 (or later), Cairne uses Endurance Aura to speed everyone up, Thrall AoE's with Lightning Storm then Fire Stomp should get multiple repeats. 

Cairne + Diablo + Millhouse --> On Turn 3 (or later) on either a last target or slower targets (this is countered by Varden and Bru'kan), Cairne use Endurance Aura, Diablo uses Apocalypse on the last target or board of reds (in case Millhouse misses the priority), Millhouse then uses Greater Arcane Missiles.

Cairne (or Millhouse) + Samuro + Thrall --> Pure AoE on Turn 2 (or later), Cairne uses Earth Stomp (Millhouse uses Arcane Explosion after Bolt on turn 1), Samuro uses Whirling Blade, Thrall uses Lightnight Storm.

Notable treasures:

Any +Horde stats, +Demon stats for Diablo, and Windfury for Cairne and/or Samuro.

If you get windfury, consider running Xyrella with that Merc so they don't take as much retaliation damage.