Mix the seasonings in a bowl. Season the brisket using all of the seasoning mix. Wrap the brisket and refrigerate for at least 2 hours, or overnight if possible.
When ready to cook, start the grill on smoke with the lid open for 5 minutes for the fire to establish. Set the Traeger temperature to 225°F. Preheat with the lid closed for 10-15 minutes.
Unwrap the brisket and place it, fat-side down, on the grill. Insert a meat thermometer probe into the thickest part.
Close the lid and cook for about 5 hours, or until the internal temperature reaches 160°F.
Remove the brisket and wrap it in butcher paper or tin foil to form a packet around the meat. Place it back on the grill at 225°F until the internal temperature reaches 203°F, about 2 1/2 hours. Remove from the grill and rest, still wrapped, for at least 30 minutes to 2 hours before slicing.
Serve with smoky Bourbon BBQ sauce.