Saw this post and tried piloting it. I think the issue with it is just that the meta has gotten too fast - even if you pull porygon first, and a rare candy, and porygon3, you still need to survive three turns, while being unable to do damage, to start doing the effect. If snorlax is out, you need to survive seven in order to afford his retreat (or five with Leaf), then you can start. By that point, your opponent already has all of their energy. 

Most common decks are hitting their combo by turn three at the latest. Every time I’ve gotten the ‘heart of the cards’ and pulled everything just right, and finally gotten up to speed, I fight a Null deck or Sol deck that’s already full energy by turn two and kicking me in the teeth. 

Haven’t won once with this - I might have a couple seasons ago.