Negation a Negation so the second Negation says "Reveal a card that is not an Action card from your hand..."
Use that Negation to reveal a Gardens. Change the Gardens so it says "Worth 1 VP for every 10 cards that are not in your deck." You can't play the card with the changed text, so you ignore that instruction. The Gardens is that new changed card until it leaves play, which is forever since the Gardens isn't going to enter play.
The Gardens is now worth 1 VP for every card in the physical universe, except for however many are in your deck at the end of the game. Baseball cards, Yu Gi Oh cards, Bicycles, Index cards, time cards, Uno cards, credit cards, key cards, and business cards are all powering up your Gardens. Assuming you are the first person to do this, you are the first person to outscore Celestial Chameleon, but don't worry, you probably are Celestial Chameleon, Celestial Chameleon probably did it before I finished this post.