As long as it doesnt bait out removal, getting one trigger off of this means at the very least paying three life for a card and a Treasure
Anytime you would make a token with Jinnie Fay, Jetmirs Second out, you can choose to have those tokens become either: 2/2 green Cat creature tokens with haste 3/1 green Dog creature tokens with vigilance Those tokens can replace everything from Food tokens to other creatures, but since it's a may effect you can control if they do or not
I never actually figured out a time to bring it in, so it would probably be better as Imprisoned in the Moon as another way of dealing with planeswalkers, or even just more counterspells
Baronne could be a good option
That Energy mix makes it a tough addition to a trainers deck, especially in formats where consistency and type synergy are key
With a playset of these cards, you should have the foundation to build a viable deck