This one should remain on the banned list
You can and will get mana fucked with reasonable regularity, there are insane combos that once executed you cant do shit about, there are trick decks that will annoy you and if you are in a rush to get your collection up, you can as always spend your rent money in short order
This means that, when entering play, Ondu Spiritdancer will trigger on itself
Any booster pack, including Wilds of Eldraine draft boosters, set boosters, and collector boosters, can contain an anime alt art
And that attack trigger is powerful when youre worried about a Urabrask's Forge in Standard or almost anything in Commander or just want to draw a card, but Im as suspicious that Kellan, Inquisitive Prodigy will work as I am suspicious that hes all the sudden a detective and stuff
Thats the total number of unique MTG cards you could identify through different art, different expansion symbols, different printing years for reprinted cards, and so-on