: i certainly would. :)
Basically, it is a cloud of thick black smoke and ash which forms into a humanoid shape at the top, with a vague head and arms, and tapers down to a point at the bottom something like a Soulless. Swords and arrows and even molotovs pass right through it doing very little damage, though explosions and magic can blast it to pieces (well, to a splattering of black dust on the landscape). It's completely immune to fire, and can float over any terrain.
For its attacks, it punches right through whole groups of units, burning them in the process. It can also throw non-explosive terrain-igniting fireballs, and for its special it turns into a swirling tornado of ash and dust, choking all living units and burning everything else, leaving behind a spiraled pattern of burnt terrain. It incinerates all minor plant life around it as it moves, and leaves a trail of charred black ground behind it.