Treasure tokens can especially help you cast cards with improvise, waterbending, or affinity for artifacts like Battle at the Bridge, Spirit Water Revival, or with Tezzeret, Master of the Bridge
Its only real competition is probably the green purple leader that is found in this set
Upheaval basically says, "restart the game, go first, and get a Black Lotus extra free for every couple of turns you hold off past like turn 5 on said Upheaval"
They also work nicely with Coastal Piracy effects and anything else that rewards you for hitting your opponents
If you play cards like these, put your hand face down on the table when you draw a card making it very clear that the only card in your hand is the one you just drew from the top of your library
Elvish Piper could be fantastic if it wasnt so slow and fragile