While it cannot buff itself, it's nonlegendary and only uncommon rarity, so you could draft a couple to buff each other
Playing the Overlord on three will put you at four lands that turn, and if you have another land drop on your fourth turn, you can cast another Overlord for the full five mana, as a creature this time, while further ramping you to six lands
This is where tutors come in, allowing you to find the perfect artifact card to enact your game plan (or halt your opponents) whenever you need it
One simple card in the notoriously powerful Urza block made them insurmountable: Yawgmoth's Will
Last but not least, hes Inkable, meaning you dont need to use up valuable uninkable spots for him in your deck
Join up with your friends and battle against an evil enemy, in this case, Ursula