While the primary purpose of "Exodia" is to declare an automatic win through having all five pieces of the "Forbidden One" per the victory condition of "Exodia the Forbidden One", there are other ways to use it, usually for other alternate victory conditions
Often regulated to bulk piles, uncommon cards are often the bread and butter of Magic, with some very strong cards that help decks function found at the rarity
Slobad, Iron Goblin Slobad, iron Goblin will be a fantastic card for artifact ramp
You only have to hit an opponent with a single creature to goad all theirs, a feat that only gets easier after youve done it once
Example: For M19, you get a bunch of free Rares from the tutorial, and I managed to average 4.5 new Rares per draft instead of 3.5