Peter Mohrbacher's artwork
Black Theros concepts.
I did quite a lot of Black aligned concepts for Theros. The latest includes Erebos, God of the Underworld and one of his worshipers.
Fun fact. Erebos was the first god to have a finalized design. I had done a couple concepts for Heliod first, but they were ultimately discarded.
Fun fact #2. The sigil on his forehead was inspired by Quickman from Megaman 2.
There is concept art and then there is mtg concept art that is on another level