Cheapest priced copy (The List): $0.69 at Card Kingdom, near mint, their price list as of .
Aminatou's Augury 
Sorcery · Rare · Commander Masters · #73
Exile the top eight cards of your library. You may put a land card from among them onto the battlefield. Until end of turn, for each nonland card type, you may cast a spell of that type from among the exiled cards without paying its mana cost.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
5 printings · $0.69 to $3.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2018 | 6 | Rare | $0.99 | — |
| Commander Masters | 73 | Rare | $0.79 | $3.99 |
| Commander Masters | 479 | Rare | — | — |
| Duskmourn: House of Horror Commander | 71 | Rare | $0.99 | — |
| The List | C18-6 | Rare | $0.69 | — |
7 rulings from Wizards of the Coast
- 13 July 2018Casting an exiled card causes it to leave exile. You can't cast it multiple times.
- 13 July 2018If a nonland card has multiple types, such as an artifact creature, you may cast it as either of those types. For example, you could cast one artifact creature as your artifact card and another artifact creature as your creature card.
- 13 July 2018If you exile a land with another card type, you can't play it later in the turn. You can only put it onto the battlefield at the time Aminatou's Augury instructs you to.
- 13 July 2018You must follow the normal timing permissions and restrictions of each spell you cast.
- 13 July 2018If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs, such as evoke costs. You can, however, pay additional costs. If the card has any mandatory additional costs, such as that of Tormenting Voice, those must be paid to cast the card.
- 13 July 2018If you wish to put a land card onto the battlefield, you do so while Aminatou's Augury is resolving, before you're allowed to cast any of the other cards. You may do this even if you've already played a land this turn.
- 13 July 2018If a spell has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.