Jetfire, Ingenious Scientist / Jetfire, Air Guardian This tends to see play in Optimus Prime, Hero / Optimus Prime, Autobot Leader Commander decks, maybe out of obligation as much as anything
That allows you to build an imposing army of 4/4s while stocking the graveyard
On curve means casting a 1-cost spell on turn 1, 2-cost spell on turn 2, and so on
Even if Thopter tokens start becoming commonplace, I can see Smash to Smithereens being a very efficient sideboard option
Good luck cracking packs and landing a sweet, valuable Special Guest
It's best combined with cards that create token creatures when you cast spells, as it'll give you a large number of creatures to attack with