tiamat mtg commander deck Magic The Gathering - (235) I feel like there are

At the beginning of each upkeep, if a player cast two or more spells last turn, transform this creature

I make my own card evaluation first, then lean on Arena Tutor for data with card ratings and pick orders

The card quality of the enablers in particular is top-notch combine that with the strong interaction of Mardu colors and you get a precon where bad draws are rare and you can easily back up the pressure applied naturally as you reanimate aggressive creatures

Dream Eater is very evocative of a nightmare sphinx

They are evensomehowStandard legal, so anyone playing that format on Arena is going to run into these options