Stormclad Heavy Warjack
Gotta love Cygnar, they get the warjacks with the most gimmicks and tricks. It wields the 'Generator Blade', one of the most powerful weapons in the wargame. No only does it cleave through armor, it can fire off ranged 'lightning bolts'; and both can be effective against infantry squads as it can trigger secondary bolts that jump around in groups. Its pretty fast, and its armor is nothing to sneer at. Its slightly pricey when it comes to points cost, its worth it in my opinion.
Had a chance to use this in an actual game this past weekend, and Im really impressed. I used it as the core of my offensive forces, and it did an incredible amount of damage. Pumped it up with focus and let it loose on the enemy. Just need to make sure I give it a bit more room, it almost wrecked my Lancer with the secondary lightning strikes (they simply smite the nearest model, even if its a friendly.)

Its supposed to be a 'Warjack of Renown' so I used alot of bronze, gold, and jet exhaust. Ive been using steel for most of the support metal, but went for silver on this one. Wanted to make this more shiney than most of the rest of my units. Quite pleased with how this turned out.