There are two recently printed common two cost sorceries in this genre that exile two for the next turn for cheap enough to play they are pretty pricey too (Wrenn's Resolve is sold out here and as high as 2 bucks on other sides, Reckless Impulse is also sold out here and tends to be closer to 2.50 on other sites) The only cheap is the uncommon from a limited Commander only set, Inspired Tinkering, also sold out but a cheaper 30 cents on other sites
(When this equipment enters create a colorless 1/1 Hero creature token and attach this to it.) Equipped creature gets +3/+2 and is a Warrior in addition to it's other types
With Mockingbird you get the upside of a flying clone, and its wording means you're always spending a net-even amount of mana compared to the creature you copy
Exploration Exploration is a great way to ramp early on because it can be easily played on the first couple of turns
4 Kindred Dominance It's no secret that effective board wipes are a cornerstone of the Commander format, allowing you to remove a wide array of problematic permanents from play with a single card
Expensive creatures like your typical Dragon love being cheaper, though