Obsessive Astronomer 
Creature — Human Wizard2/2
Oracle text (EN)
Creature — Human Wizard
If it's neither day nor night, it becomes day as this creature enters. Whenever day becomes night or night becomes day, discard up to two cards, then draw that many cards.
Printing details
- Set
- MID · 152
- Rarity
- Uncommon
- Language
- EN
- Artist
- Josu Hernaiz
- Released
- 2021-09-24
- Prices
- €0.08 · $0.14
Price history
The trend shows with at least 7 days of history.
- Cardmarket, trend
- CardTrader, Near Mint minimum (EN)
The history starts on October 28, 2026 and grows every day.
Show the data
| Date | Cardmarket, trend | CardTrader, Near Mint minimum (EN) |
|---|---|---|
| October 28, 2026 | €0.08 | €0.11 |
Prices
| Source | Non-foil | Foil |
|---|---|---|
| Cardmarket | low €0.02 trend €0.08 30-day avg €0.06 | low – trend €0.14 30-day avg €0.14 |
| CardTrader (EN) | NM from €0.11 with Zero from €0.11 | NM from €0.14 with Zero from €0.14 |
| CardTrader (any language) | NM from €0.11 | NM from €0.14 |
Cardmarket updated Oct 29, 2026 · CardTrader updated Oct 29, 2026
Buy and look up
Legality
- standard Not legal
- pioneer Legal
- modern Legal
- legacy Legal
- vintage Legal
- commander Legal
- pauper Not legal
- alchemy Not legal
- brawl Legal
- competitivebrawl Legal
- duel Legal
- future Not legal
- gladiator Legal
- historic Legal
- oathbreaker Legal
- oldschool Not legal
- paupercommander Not legal
- penny Not legal
- predh Not legal
- premodern Not legal
- standardbrawl Not legal
- timeless Legal
- tlr Legal
Rulings
-
Before a player untaps their permanents during the untap step, the game checks to see if the day/night designation should change.
-
Day and night are designations that the game itself can have. The game starts as neither. Once the game becomes day (or less commonly, night), the game will be exactly one of them—day or night—going back and forth for the rest of the game.
-
If it is day, and the active player of the previous turn cast no spells during their turn, it becomes night.
-
You may choose to discard no cards when the Obsessive Astronomer's triggered ability resolves.
-
If a triggered ability triggers whenever day becomes night or night becomes day, it only triggers if it was already either day/night and becomes the other. It does not trigger when the game becomes day or night for the first time.
-
If it is night, and the active player of the previous turn cast two or more spells during their turn, it becomes day.