Sometimes people create them as proxies for rare cards they cant afford, though that might raise a few eyebrows at official tournaments
Following this second way, you should be bringing in: On the contrary, we are boarding out these: Both approaches are viable on their own
Greater Good 0/10 I simply can't see the token deck that produces things with more than three power consistently
Nomad Mythmaker Nomad Mythmaker is a card that requires a lot of setup to be good
Plenty of cards have been banned too, like Oko, Thief of Crowns and Once Upon a Time
10 Massacre Girl, Known Killer Ravnicas Most Likely Suspect Including Massacre Girl, a well-known serial killer, on the list of suspects for Murders at Karlov Manor was a very funny move by Magics writers, but her card itself is no joke