Cheapest priced copy (Mystery Booster 2): $0.35 at Card Kingdom, near mint, their price list as of .
Environmental Sciences 
Sorcery — Lesson · Common · Strixhaven: School of Mages · #1
Search your library for a basic land card, reveal it, put it into your hand, then shuffle. You gain 2 life.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mystery Booster 2 | 2 | Common | $0.35 | — |
| Strixhaven: School of Mages | 1 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 16 April 2021 Lesson 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 2021 Although 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.