As a third point of reference, here are all the Pioneer-legal cards printed each year (the blue bars), and the Pioneer-legal original cards (the red bars) released since 2013: Again, a similar trend: a slight increase in non-reprint cards, and a large increase in the number of reprints
Theyre all either enchantments, instants, sorceries, or artifacts
Against combo decks, being able to evoke Grief then reanimate it back on turn one is sometimes enough to win games on its own
While this list uses many of the same cards and resource hitting strategies it doesn't really abuse the symmetries
Once they are in play, they can completely take over the game
One more win and you're in the top eight