Fake cards are usually lighter (1.50 to 1.62 grams, missing the graphite core) or heavier (1.95 grams or more, using dense plastic to simulate weight)
With that said, for me this list begins with Aethersquall AncientAethersquall Ancient, which while expensive, is the threat that I have seen win energy decks the game time and time again
Keywords like this are considered evergreen, meaning they show up in every set on at least a couple creatures
Ill refer you once again to the Unstable FAQAWASLFAQPAFTIDAWABIAJTBT: You know how lifelink causes you to gain life
I could also see Sarkhan being the key piece of a R/B Control deck which is the kind of deck that always looks better on paper than how it performs because of the variance in its draw steps and lack of velocity to filter through the deck, the exact problem Sarkhan can solve
Demonic Tutor, for example, is much more potent than Trinket Mage