Cheapest priced copy (Strixhaven Mystical Archive): $0.35 at Card Kingdom, near mint, their price list as of .
Agonizing Remorse 
Sorcery · Uncommon · Theros Beyond Death · #83
Target opponent reveals their hand. You choose a nonland card from it or a card from their graveyard. Exile that card. You lose 1 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Strixhaven Mystical Archive | 24 | Uncommon | $0.35 | $0.49 |
| Strixhaven Mystical Archive | 87 | Uncommon | $0.39 | $0.49 |
| Theros Beyond Death | 83 | Uncommon | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 24 January 2020No player may take actions between the time you choose a card and the time it's exiled.
- 24 January 2020If there are no nonland cards in their hand and no cards in their graveyard, then you just lose 1 life.
- 24 January 2020If you choose a card from their graveyard, it may be a land card.
- 24 January 2020You must choose a card to exile if able. If there are no nonland cards in the opponent's hand, you must exile a card from their graveyard, and vice versa.