I like that Stella Lee, Wild Card rewards you for cheap spells, unlike Izzet builds like Magnus the Red or Mizzix of the Izmagnus which are about discounting expensive spells
A textured foil costume change card appears in less than 1% of Collector Boosters in this slot
The most popular Commander from that set, by a significant margin, is Norman Osborn Goblin
In the middle of the pack are Mardu Humans and Abzan Keywords, which both got a lot of reprinted legends but not ones that are especially playable as commanders, with Alesha, Who Smiles at Death being the most popular of the bunch at #43 and Karametra, God of Harvests being the only other legend from the decks to break the top 100
On the other hand, if you're a regular player doing a draft or opening a box, the amount of variance in the set is going to be absurdly high