No matter what tribal deck you want to play -- Zombie, Human, Zubera, Trilobite -- you now always have at least one commander option that supports your tribe and lets you play all the relevant cards since Morophon grants you access to all five colors
Even though its niche its so good that I had to put it in my Top 10
The probability of drawing at least one land in your first two draw steps, using the hypergeometric distribution, works out to just over 70%
Still, the cards popularity has caused its price to remain prohibitively high for many players
While its ability to endlessly regenerate itself is one thing, being able to mill six cards from the top of your library instead of drawing every turn is just too powerful of an effect for players to be able to access for free
Ive found it to be a very desirable target for cards such as Sevinnes Reclamation and Sun Titan, since you might need it later if graveyards start to fill up again