Each new one of these breakdowns that I do seems to have a deeper pool of potential cards than the last one
Celebi Celebis Traverse Time attack could be a really solid pick for Grass box decks especially those running the powerful Mega Venusaur ex strategy
I do think one option that you have is replacing all signets with mana dorks like Birds of Paradise, Llanowar Elves, and Elvish Mystic If you are able to find more slots, I think you should consider: Hullbreaker Horror, Thryx, the Sudden Storm (dependent on count of spells with 5 cmc or more), Soothsaying, Mulldrifter, Beast Whisperer (dependent on final count of creatures), Rishkar's Expertise, Turntimber Symbiosis Flip , See the Unwritten, Balefire Dragon, Scourge of the Throne, Bane of Progress (I feel like you do not have a ton of high value artifacts or enchantments that would cause this to cripple you), Momir Vig, Simic Visionary, and Genesis Storm
Widely known as the 'King of Collectables', the Pikachu Illustrator Pokemon card is regarded by some as the holy grail because it's the single most expensive card of its kind and only about 40 copies are believed to exist
(You can t use more than 1 VSTAR Power in a game.) Arceus V Trinity Charge Put 2 darkness energy attached to this Pokemon into your hand
Whats more, you can add card-draw punishment or discard payoffs with cards like Sheoldred, the Apocalypse or Waste Not