Cheapest priced copy (The List): $1.29 at Card Kingdom, near mint, their price list as of .
Arcane Laboratory 
Enchantment · Uncommon · Seventh Edition · #60
Each player can't cast more than one spell each turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $1.29 to $99.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Seventh Edition | 60 | Uncommon | $1.79 | — |
| Seventh Edition | 60★ | Uncommon | — | $99.99 |
| The List | 7ED-60 | Uncommon | $1.29 | — |
| Urza's Saga | 60 | Uncommon | $1.79 | — |
3 rulings from Wizards of the Coast
- 4 October 2004When it leaves the battlefield, the effect ends and all players are able to cast spells unrestricted again.
- 4 October 2004When Arcane Laboratory enters, it will look back over the turn to see if any spell was cast before it entered the battlefield. It will notice itself being cast.
- 4 October 2004If a spell is countered, it still counts as the one spell cast.