Using the API, javascript, and JSON, these generators pull the name, mana cost, color, and descriptive text of each individual card
My philosophy around these sorts of cards is in many ways informed by the popularity of the Modern format and just generally formats where many different archetypes are viable
Grimgrin, Corpse-Born: If you want to play with your blue Zombies along side your black ones, then Grimgrin is probably your Nebuchadnezzer: Although this is a decent card, its not really powerful enough for the amount of mana you have to sink into it every turn
After youve controlled the game entirely, and if you havent won hard enough, you can activate Jaces final ability to exile an opponents library and force them to turn whatever cards they have in hand into their new library
But it does mean theres little reason to believe its real