Step 3: If you are looking to sell quick, you can get your hands on these same rare cards for much cheaper if they are ungraded
For example, say you control a colorless creature, a blue creature, a green creature, and a creature that's both blue and green
Put these two things together, and the most obvious answers are Uro, Titan of Natures Wrath and Kroxa, Titan of Deaths Hunger from Theros Beyond Death
Adding 4 copies of EB01-003-kid-killer to the deck gives it more offense in the late game
Even though it's only once per turn, if you play your cards right you could be getting three Treasures before the turn comes back to you
This recent high school graduate is the proud owner of his very own startup called Vortex Sportscards which specializes in a somewhat esoteric money-making operation