If I control Athreos, God of the Dead and Mikaeus, the Unhallowed and my Blood Artist dies, which effect triggers first?
Both abilities will trigger simultaneously, but since you control both of them, you get to choose the order in which they go on the stack and resolve.
(Also, Athreos is the God of Passage. Erebos is the God of the Dead. He might get mad if you try to give his title to a lesser god.)












