There were two cycles of Auras with this line of text, as a matter of fact, but most of them are not worth it
Teferi, Time Raveler became one of the most hated cards ever, and was banned for being overpowered and not fun to fight
As of my count, there are 8 different card types: land, creature, sorcery, instant, artifact, enchantment, planeswalker, and battle
Garnet, Princess of Alexandria The ability to keep Sagas going is pretty cool
This five (usually) cost 4/4 will save your unspent mana as Black
While the front side is good enough to see play on its own, the fact that it only has four defense counters makes it relatively easy to flip (a single Sheoldred, the Apocalypse attack gets the job done), and the backside offers a very powerful creature that can defeat a battle or kill a planeswalker each turn while potentially generating card advantage as well