While it doesn't quite work as a graveyard recursion commander due to the lack of green in its color identity, it fits excellently into the 99 of many strong Orzhov (white/black) decks
You can use this as late game player kill when their library has dropped or ideally to fuel up yours with options
If a creature wearing Rancor is killed, at least you get back the Rancor
Obviously, Crown of Skemfar is a fantastic addition to Elf Tribal decks, and it gives them an excellent answer to flying creatures too, something the green/black deck typically struggles with
Typically, players had three different boosters to open: Set Booster Packs, Draft Booster Packs and Collector Booster Packs
It practically gives you a level of deck control that feels like cheating when used correctly