It can die quite easily to very cheap removal in the format, and it doesn't give you any sort of value up front
Archon generates card advantage and impacts the board when it ETBs or attacks, just like the Titan cycle
It would be powerful enough just to cheat free creatures into play, but putting them in tapped and attacking makes this a lethal commander that overwhelms the table with just a few combat steps
Ending the turn takes some unpacking for what it actually means, but when everything goes to the graveyard from the wipe, theres no time for death triggers to resolve, which can be huge upside
This means youll see famous characters from games like Devil May Cry, Tekken, Resident Evil, etc
Emet-Selch, Ascian K'rrik, Son of Yawgmoth requires a ton of black cards to do much, and its a card thats much more aimed at something like Commander than Limited