Teferi, Temporal Archmage seems like the best choice, despite being rather expensive
Creature Artifact - Golem Myr Battlesphere When this creature enters, create four 1/1 colorless Myr artifact creature tokens
The Iron City Plane: Nozgorod All lands have T: Add to your mana pool
Additionally, Rasaad makes use of the Initiative mechanic introduced in Battle for Balduer's gate, doubling the toughness of your creatures whenever it attacks, as long as you have the initiative
Ally is out crushing the MPL and Rivals League Weekend, so Im stepping in to talk about some Strixhaven cards that are going to shake up the Historic format
The Undying ability, coupled with a Sacrifice outlet, recursion, and the ability to remove the counters placed on this card when it returns to the field, makes for a great drain and burn loop in both Commander and Modern where combo pieces are readily available