The immediate clock it forces onto an opponent is unparalleled in the current state of the game
Madison Li is to lay down Artifacts, generate Energy, and use that Energy to empower other units and trigger other effects
Its a bit slow for modern Commander, but you must respect part of a two-card combo in the command zone
The idea here isn't to grind out the table in card advantage, but rather to play out a couple creatures, beef them up with counters, drop something that makes combat extremely favorable for you like Odric, Master Tactician, and then protect your investment with cards like Unbreakable Formation
Joshua, Dion, and Jill all make appearances, at one, two, and three copies respectively
This Sheoldred is one of those generally good cards, but it can work especially well in decks that fill your own deck with cards, giving you lots of creatures to choose from for reanimation