He knew for a fact that the Gordons no longer held the City Hall in high regard after what happened to their clan, and until the City Lord deemed it the right time to go against them, Marcus had no intention of crossing swords with such battle-hardened mage warriors.
Especially not with the Blood Moon War approaching, strong allies were needed, not enemies.
Besides, if he were to get injured in a confrontation with the Gordons before the war even started, he would have only himself to blame.
He would be an easy target for the zombies that would soon flood the battlefield, so avoiding unnecessary conflict while maintaining his authority was his best course of action.