Cheapest priced copy (Modern Horizons 2): $0.35 at Card Kingdom, near mint, their price list as of .
Mystic Redaction 
Enchantment · Uncommon · Modern Horizons 2 · #338
At the beginning of your upkeep, scry 1.
Whenever you discard a card, each opponent mills two cards. (They put the top two cards of their library into their graveyard.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 2 | 53 | Uncommon | $0.35 | $0.49 |
| Modern Horizons 2 | 338 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 18 June 2021If Mystic Redaction's last ability triggers during the cleanup step because you are discarding due to maximum hand size, players will be able to respond to that ability. Then, when all players have passed priority in succession with the stack empty, a new cleanup step will occur.
- 18 June 2021The ability that defines Necrogoyf's power works in all zones, not just the battlefield. If Necrogoyf is in a graveyard, that ability will count itself.