Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.35 at Card Kingdom, near mint, their price list as of .
Summon Undead 
Sorcery · Common · The List · #CLB-151
You may mill three cards. Then return a creature card from your graveyard to the battlefield. (To mill a card, put the top card of your library into your graveyard.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 151 | Common | $0.35 | $0.49 |
| The List | CLB-151 | Common | $0.35 | — |
3 rulings from Wizards of the Coast
- 10 June 2022If you have fewer than three cards in your library, you can't choose to mill any cards this way.
- 10 June 2022You can return a creature card that you milled or one that was already in your graveyard.
- 10 June 2022You return a creature card if there is one to return, even if you chose not to mill three cards.