A fetchable tri-land with basic types has had a huge sway on many formats
So get ready for 2017, the Era of Paradox Engines
Galestrike: Functionally a similar card to Drag Under, except at instant speed instead of as a Sorcery, and the creature has to be tapped
Balatro [Best Game Like Slay the Spire Thats a Poker-Infused Fever Dream] Balatro turns poker hands into a roguelike score chase where Jokers and multipliers define your runs engine
Which, aside from meaning you can effectively play two spells with a single card, also means that once you cast an Adventure, its associated creature is safe from forced discard effects
Apparently revealed via some kind of photo booth, this is a fast, flexible legend with a lot to offer