Being able to draw extra cards is always a huge benefit in Magic, and being able to spread out your damage allows you to target whichever opponent is least able to block you
Weve seen several win conditions that ignore your opponents life total entirely, and control decks often win by a wide enough margin that one extra turn of attacking doesnt matter
It was mostly artifact synergies, things like Goblin Welder, that really kept him alive in cube for the past few years
It happens to get along fantastically with Eldrazi titans like Ulamog, the Infinite Gyre
And here we are: graveyard decks are dominant
Where the first two Mox in our list were pretty solidly rooted at $3,000 (and on a good day might be nailed down for a hundred or two less than that), the Mox Ruby is starting to edge up a bit crossing into the $3,100 range