It works like a mixture of venture and monarch , which means its a familiar mechanic that wont feel new or overly complicated like other new mechanics often do
Read More: These Common And Uncommon Wildcards In MTG Arena Need A Purpose 6 Rashmi, Eternities Crafter Good old Rashmi, Eternities Crafter is a four mana Blue and Green 2/3
There have been previous effects printed previously in this genre of card
Counter target sorcery spell
Im not sure why you would build your deck around your commander only to have it change into another creature, unless your commander accumulates +1/+1 counters on it like Wyll, Blade of Frontiers, and once youve got enough on it you can copy a creature with a large body
Its arguably better than Timetwister since it fills your graveyard, and red doesnt have the raw card advantage that blue does