Turn Lazav, the Multifarious into this in a Commander game and watch your opponents smiles curdle on their faces
In practice, players see it as a reason to go open-season on you out of fear of what you might do later
Shes not hard to turn on, and growing the team alongside an untap is a kingly gift
If you lose the flip, this artifact deals 3 damage to you
The initial cast costs one black mana, and then with it on the board, you can pay another single black mana and discard a creature card to return a creature from your graveyard to your hand, thus making it a strong recursion tool
There's also a consideration for commanders that give your opponents more choices to make, since it adds to the interactivity of the game