Cheapest priced copy (Kaladesh): $0.35 at Card Kingdom, near mint, their price list as of .
Start Your Engines 
Sorcery · Uncommon · Kaladesh · #135
Vehicles you control become artifact creatures until end of turn. Creatures you control get +2/+0 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kaladesh | 135 | Uncommon | $0.35 | $0.79 |
2 rulings from Wizards of the Coast
- 20 September 2016The set of Vehicles and creatures affected by Start Your Engines is determined as the spell resolves. Creatures you begin to control later in the turn won't get +2/+0, and Vehicles you begin to control later in the turn won't automatically become creatures and won't get +2/+0.
- 20 September 2016Vehicles you control become artifact creatures and then also get +2/+0.