It is a very odd mana rock, because you are spending mana to get 1 less than you spent, but I think the threat here is that it then also becomes an 8/8 that makes opponents start sacrificing permanents, which seems pretty strong, especially since it is safe from creature-based removal until you turn it on
The card hasn't started seeing play in any new decks, and there aren't any freshly popular MTG commanders it plays well with
Players invest time, money, and a little of their soul into their decks, and they want to feel like they had an impact on the game
The Best Aggro Decks in Ravnica Allegiance Standard Magic the Gatherings latest set, Ravnica Allegiance has only be fresh off the press for a mere few weeks, but already the meta is evolving and adapting to the new cards added to the Standard pool
Without those adding one of these to your deck may be worth it but it is the kind of thing I would counterbalance by adding more fixing or increasing my land count to do