March of the Machines Chandra, Hopes Beacon does what other Chandras do well mana production, along with card advantages as well as damage production
There are plenty of ways to mess with your opponent's cards, like forcing them to untap cards between turns or just messing with their ability to use effects like scry, surveil, or some tutors
The Second Commander The second commander is a creature from the darkest corners of the D&D universe: the Beholder Karazikar, the Eye Tyrant
Your seat stays with the game with you in it
Of all the different ways to contemplate whether or not a thing is a thing in the Magic: The Gathering system that that system does recognise then oh boy howdy, then the system lights up and points at it
Greaves is usually the first choice, followed by Boots if you plan on targeting your own creatures a lot, and some decks are happy with a copy of each