We've seen debt; we've had our minds expanded. Let's take a look at something completely different.
It happens to the best of us. You play that Smithy with no action left, thinking "what could possibly go wrong?" and curse your rotten luck when two Action cards pop into your hand. "If only I could turn back time," you say. Well, buckle your seatbelt because where we're going, we don't need Villages. A Villa will do nicely enough.
Villa is a brand new type of Village to populate your empire with. The natives are restless, and they simply don't want your turns to end. Maybe the other players do, but you don't care; you're impressing them with your fancy action chain. Aside from being able to continue your turn, you of course gain the Villa itself, and maybe you needed one of those. I'm not judging. With Villa, the possibilities are endless. Or perhaps only tenfold, as the pile has to empty at some point.
As long as there are Villas left in the pile, you always have that shot at continuing your turn. And you can do it more than once in the same turn! Wow! The rulebook can't actually cover all possible turn order acronyms now. ABCD... ABABACD... ABABABABABABABCD... the list goes on, and that would have been valuable ink. Of course, as an emperor, you've begun to develop some higher-order critical thinking skills. I'm sure you can come up with your own mnemonic devices, or defer to your Mnemonic Advisor.