Summon: Fat Chocobo is the exception, as it just puts tons of stats on the board, but most 3-5 mana threats arent really what this deck is looking for
Kamigawa: Neon Dynasty has that same potential, so this list will likely need a lot of revision come February
Ravensburger, bringing families together since 1891
That could be an Elesh Norn, Grand Cenobite or Avacyn, Angel of Hope you're popping into play for the low price of 3 mana and bouncing a tapped creature back to your hand, which is possibly additional upside with the right ETB creatures
Elves can struggle in formats with interaction that stops them early, usually a cheap sweeper
At the beginning of combat on your turn, Mishra creates a 4/4 Construct token copy of one of your non-creature artifacts, which gains haste and is sacrificed at the end of the turn