To transform Elesh Norn in the first place, you'll need to pay three mana and sacrifice three creatures, so having little dudes seems the right choice
Lastly, rounding out the top of the list is another mythic rare, this time a legendary enchantment: Sothera, the Supervoid
Illustrated by Kotakan Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
What awful cards did I include
In fact, there are games where Panopticon gets flipped, and it sticks because everyone wants a Howling Mine out for a few turns
Cards that create fast mana like Mana Vault and cards that deny opponents access to their hands while also drawing your entire deck, like Grand Arbiter Augustin IV, are prime examples of unfun cards to play against