Indestructible
Mishar-Rashim, Hunting Twins can't be white or red.
When Mishar-Rashim enters the battlefield, target players loses five life, discards three cards, and destroy target land that player controls. You must target yourself unless a creature you don't control died this turn and an opponent lost three life.
See Harrah, the Tracker. The God Avatars I'm not super picky on, as they really don't need too much to distinguish them beyond being legendary creatures of their appropriate colors. But, how do I do the god the avatars represent? Do I include some kind of tether like the Theros Gods or the mono-colored Amonkhet gods (while they lived)?
Perhaps, the bringing a god out should be dangerous, punishable if one isn't worthy to receive the god. However, if one is worthy, the god will grant them a boon.
Each god would have a unique condition. Mishar-Rashim are hunters, so I wanted to make a hunting theme condition for them. I went for targeted route because "You must target yourself, unless..." was much shorter than the other route I considered which was "Lose five life, discard.... If a creature an opponent controlled died and an opponent lost three life, you have an opponent [do those things] instead.
Can't be red or white for god reasons. Has indestructible for god reasons.