Cards that prevent creatures from untapping, as these are so disliked by the majority of players that resolving one actually gets more combat damage dealt your way, not less
We just don't get viable 2-cost mana rocks very often, with the last universally playable one being Arcane Signet released 5+ years ago now
The combination of an efficient 4/3 flyer for 5 mana with a one-card win condition is intoxicating
Demilich In Modern, were currently seeing a resurgence of UR Delver-style decks brought about by Modern Horizons II all-stars Ragavan, Nimble Pilferer, Dragons Rage Channeler, and Murktide Regent
Meet Fog, the namesake card for todays category of all-damage-preventing spells
Why was Toolcraft Exemplar pushed so hard