The symbol of Deceit

Deceit is the power of lies, trickery, shadow, and shapechanging--Deceit makes a lie of everything we think is true.

Deceit was the third Doom to assault the world. While Destruction may meet a force equal to its fury, Deceit wins the battle before the army takes the field. An army defeated by Deceit is just as beaten as one brought low by force, but with propaganda enough, it may itself fall into Deceit's service. Those who walk knowingly in the shadow of Deceit are master liars who spin fabrications of both fact and body for the sheer exuberance of controlling the destiny of other creatures through falsehood.

Deceit Shapeshifter (Concept Art)

Because the perfect lie can make a willing servant of any creature, it may be that Deceit will be the Doom through which the apocalypse is finally triggered.

Color: Deceit is blue as a soldier's corpse betrayed by propaganda.

Opposed: Deceit may flow from frustrated Greed, but Destruction, the Doom of brutes and low-brow thinkers, is Deceit's ideological enemy. Why exert so much effort to destroy a foe when a well-placed lie makes your foe into your ally in the first place?