Jace, Architect of Thought Back in the day, the previous 4-mana Jace, Jace, the Mind Sculptor dominated Standard fiercely and was ultimately banned
If that creature dies this way, its controller creates two tokens that are copies of that creature, except their power is half that creature's power and their toughness is half that creature's toughness
It gives you complete and utter authority over what does and doesnt resolve since your opponent cant counter it back
Black Acornelia, Fashionable Filcher If you like squirrels, Acornelia, Fashionable Filcher is the commander for you
Remember, these are all lottery boxes so you may hit it big and you may miss all the high priced cards
Other cards like Stonecloaker or Restoration Angel offer similar effects with additional benefits, making them potentially better choices depending on the deck's strategy and needs