Some notable examples: Celebrations (2021): 4 cards per pack
Sugar requires you to play with Donquixote Characters for her End of turn ability, which isn't overly surprising, but it's interesting that Sugar has an ability that relies on Events
Mega Evolution is being introduced as part of a larger theme, with multiple Pokmon TCG sets expected to feature these powerful Pokmon
Traveling Chocobo So I'm a bird and chocobo fan and Traveling Chocobo supports bird themes in a great way, however, landfall decks grab onto this chocobo and hold on for as many doubled up and quadrupled triggers you can get from one fetch land
Mostly due to the vampires strong going in the first game Mikko was cursed twice too, but since his draws were abysmal no-one wanted to attack him
This is because Elminster's -3 ability allows you to exile the top card of your library, creating a number of 1/1 flying Faerie Dragon tokens equal to the exiled card's mana value