Whenever one or more +1/+1 counters are put on Emperor of Bones, put a creature card exiled with Emperor of Bones onto the battlefield under your control with a finality counter on it
An unplayable serialized card was worth a fraction of a card that sees heavy play
Youd have to put tons of defenders and creatures with high toughness in your deck, but theyre always cheap and great for this budget Commander deck
Also keep in mind that if you successfully import a deck, you may still need to make sure you've selected the proper format (if you import a Timeless deck but set it as a Standard deck, you'll get an Invalid Deck error message)
There's a good reason why this is one of the most favored Commander options from the pre-con deck, based on early reactions.
1998's Urza's Saga block has a reputation for almost ending the game, which makes Windfall a fitting inclusion in this series of historic promos