Regardless of your commander choice, a committed Transformers theme deck probably wants to focus more on artifact synergies than legendary ones, with a smattering of combat tricks and +1/+1 counter generation
And if you run a white weenie strategy, lands that tap for colorless can get you stuck when most of your creatures just cost white pips
Hungry Jaw is the main attack youre looking for here, dishing out an impressive 270 damage for just two dark energies
Reject Imperfection Go read what I had to say about Experimental Augury again
I personally run Spawnsire of UlamogSpawnsire of Ulamog in my Kruphix, God of HorizonsKruphix, God of Horizons deck, but only because I've run it by my group and they've all agreed that it's hilarious to dump a bunch of random Eldrazi onto the battlefield
Normal types that universally resist Psychic are the obvious solution but we lack quality cards and most of all, evolutions