3rd Anniversary Special Cards: 2 types
Its also worth mentioning Hour of Reckoning here because that ups the count of extremely one-sided wipes to three, potentially more depending on board state
This Lost Caverns of Ixalan card is just way too strong in typal decks, and the ability doubling effect on a hard-to-kill colorless creature is also just useful for any deck with good triggered abilities in the command zone
While most of the sets new mechanics are great, one returning mechanic, Lessons, sparked a lot of confusion
The initial damage clears out smaller creatures and planeswalkers, and every land you play after that replaces your board with flying 4/4 dragons, making fetch lands and extra land drop effects extremely efficient, quickly turning a reset into overwhelming pressure that many decks struggle to answer turn after turn
Grasping Dunes design was simply us taking the elements of the original Desert and tweaking them to play better