Tyler grew up, literally, eating cereal in front of the TV watching this show, and from making cel-shaded fanart of Critical Role characters and then pitching the style to Wizards, art director Tom Jenkot called him up to make art that is exactly, down to pantone, in Magic’s upcoming secret lair.
You can see how Tyler had to mix the paint in one photo in separate plastic paint color receptacles, to keep the solid flat color consistent, identical to an original animate cel creator. He applied 5-6 layers per area of color, by “pushing the glob” on the acetate to have it opaque. While he says it took the same amount of time vs. a normal Magic painting, the prep work to have colors matching exactly, the process of hand-making the lines and mixing paint, took him a better part of two months to do the six pieces. Check out the last picture shown to see the backside!