In the Japanese Mega Brave/Mega Symphonia sets, Mega Ultra Rare replaced Hyper Rare cards entirely
Awaken the Woods slots into pretty much every land-based Commander deck, like Lord Windgrace and Obuun, Mul Daya Ancestor
No other set on this list will come anywhere close to as recent as this, but it feels as though the impact of this set is already being felt and will be long into the future
Rest in Peace A lot more relevant these days than it used to be, Rest in Peace (RIP) hates on Snapcaster Mage, Tasigur, the Golden Fang (or Ladyboy, the Golden Wang as I've heard him called), and Become Immense, as well as the odd graveyard deck like Gifts Tron
The core strength of Amethyst is its powerful abilities that can cause terror against any deck as long as they aren't disabled
Later on Phyrexians would have more colour identities than the simplistic "villain = Black Mana" we have here, but it does fit with the idea of Phyrexian power being a dangerous, forbidden Pandora's Box to those that aren't actually receptive to its ideologies and power
