The fact that Jinnie Fay can occupy a mono-green, Gruul, Selesnya, or even Naya slot also makes it easier to fit into a Cube than a lot of other three drops
To be honest, this creature feels like less of a flavor win than most of the others, but the drop is still pretty good, with some staples like Primal Vigor and Heroic Intervention
2 - Chains of Mephistopheles Oracle Text: If a player would draw a card except the first one they draw in each of their draw steps, that player discards a card instead
It's hard to stop, and the number of cards that exist that can feasibly answer it are few
She even has combo potential beyond getting untapped a few times
It also partners with Alisaie Leveilleur, who makes the second spell you cast cheaper, so it should be very interesting and easy to do these small combos