[FiTB] Envoy Warlock

Control Warlock with a few win conditions. You can either go infinite with primes or Tickatus, and we have the new reworked Lord Jaraxus for some health, a sweet weapon and awesome hero power.

Some small adjustments to be made, I am not sure we need 2 Cascading disasters, will see how the meta shapes up. Also went for Hellfire over Firebreather just to make Felosophy more consistent with Envoy and Tickatus. Again, will see if this needs to change. 

We should have enough removal and lifesteal for the early game and once we make it to 5 / 6 mana, it should be strong enough to face whatever is out there.