This is quite an interesting card. The card is very close to winning the game for eight mana, but unlike many cards in that vein, it actually does have quite a bit of upside in other scenarios. Okay, maybe it doesn’t quite “win the game” for eight mana, but destroying all other nonland permanents and putting six 2/1 creatures into play is definitely strong. The more mana you spend, the more creatures you get.
If you spend less than 8 mana, this is still a legitimate card. The issue of the creature tokens entering the battlefield tapped is an unfortunate one, as it takes away the ability to make two or three 2/1 creatures and then block with them. You do have to wait a turn, but against a hyper aggressive deck it may still be worth it.
Orzhov Control decks have been represented in the past, though it has been a while. This card is powerful enough that it could potentially put Orzhov back on the map or potentially be a powerful took in a deck like Mardu or Esper control.