Cheapest priced copy (Strixhaven: School of Mages Promos): $0.49 at Card Kingdom, near mint, their price list as of .
Illuminate History 
Sorcery — Lesson · Rare · Strixhaven: School of Mages · #312
Discard any number of cards, then draw that many cards. Then if there are seven or more cards in your graveyard, create a 3/2 red and white Spirit creature token.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Strixhaven: School of Mages Promos | 108p | Rare | $0.49 | $0.79 |
| Strixhaven: School of Mages Promos | 108s | Rare | — | $1.29 |
| Strixhaven: School of Mages | 108 | Rare | $0.49 | $0.49 |
| Strixhaven: School of Mages | 312 | Rare | $0.99 | $1.49 |
4 rulings from Wizards of the Coast
- 16 April 2021You may choose not to discard any cards as Illuminate History resolves. In that case, you will not draw any cards, but you might still create a Spirit.
- 16 April 2021Lesson is a spell subtype found on some instant and sorcery cards in the Strixhaven set. The Lesson subtype has no special rules associated with it.
- 16 April 2021Illuminate History will stay on the stack until it is finished resolving, so it will not count itself as one of the cards in your graveyard.
- 16 April 2021Although you may want to include Lessons in your sideboard if you’re playing with cards that instruct you to learn, Lesson cards can be included in your main deck like other instant or sorcery cards.