
Cheapest priced copy (Dominaria United Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Explore 

Sorcery · Common · Worldwake · #99
You may play an additional land this turn.
Draw a card.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
29 printings · $0.49 to $14.99 at Card Kingdom
3 rulings from Wizards of the Coast
- 14 March 2017If you somehow manage to cast Explore when it's not your turn, you'll draw a card when it resolves, but you won't be able to play a land that turn.
- 14 March 2017The effects of multiple Explores in the same turn are cumulative. They're also cumulative with other effects that let you play additional lands, such as the one from Urban Evolution.
- 14 March 2017Explore's effect allows you to play an additional land during your main phase. Doing so follows the normal timing rules for playing lands. In particular, you don't get to play a land as Explore resolves; Explore fully resolves first and you draw a card, perhaps a land you'll play later.