From DominionStrategy Wiki
|If your deck and discard pile are empty, gain 3 Golds.|
Windfall is an Event from Empires. It rewards you with three Golds for drawing your deck, and thus gives you incentive to build a slick engine first and then let this Event provide the payload once the engine is complete.
 Official FAQ
- If there are fewer than 3 Golds in the pile, just gain the remaining Golds.
 In other languages
- Dutch: Meevaller (lit. godsend)
- Finnish: Onnenkantamoinen (lit. stroke of luck)
- German: Glüksfall (lit. stroke of luck)
- Japanese: 意外な授かり物 (pron. igaina sazukarimono)
- Polish: Gratka
- Russian: Нежданная Удача (pron. nyezhdannaya udacha, lit. unexpected success)
 Secret History. It's a hard condition to meet so I felt like I could be just a little more generous.