Cheapest priced copy (Battle for Zendikar): $0.35 at Card Kingdom, near mint, their price list as of .
Sure Strike 
Instant · Common · Innistrad: Double Feature · #446
Target creature gets +3/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
9 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battle for Zendikar | 157 | Common | $0.35 | $0.49 |
| Innistrad: Double Feature | 446 | Common | $0.35 | $0.49 |
| Foundations | 209 | Common | $0.35 | $0.49 |
| Guilds of Ravnica | 118 | Common | $0.35 | $0.49 |
| Core Set 2019 | 161 | Common | $0.35 | $0.49 |
| Core Set 2021 | 163 | Common | $0.35 | $0.49 |
| The List | GRN-118 | Common | $0.35 | — |
| Innistrad: Crimson Vow | 179 | Common | $0.35 | $0.49 |
| Ixalan | 166 | Common | $0.35 | $0.49 |