Cheapest priced copy (Jumpstart 2022): $0.35 at Card Kingdom, near mint, their price list as of .
Act on Impulse 
Sorcery · Uncommon · The List · #M15-126
Exile the top three cards of your library. Until end of turn, you may play those cards. (If you cast a spell this way, you still pay its costs. You can play a land this way only if you have an available land play remaining.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 492 | Uncommon | $0.35 | — |
| Magic 2015 | 126 | Uncommon | $0.35 | $1.49 |
| The List | M15-126 | Uncommon | $0.35 | — |
4 rulings from Wizards of the Coast
- 18 July 2014Any cards you don't play will remain exiled.
- 18 July 2014Playing a card this way follows the normal rules for playing the card. You must pay its costs, and you must follow all applicable timing rules. For example, if one of the cards is a creature card, you can cast that card only during your main phase while the stack is empty.
- 18 July 2014Under normal circumstances, you can play a land card exiled with Act on Impulse only if you haven't played a land yet that turn.
- 18 July 2014The cards are exiled face up.