Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Subtle Strike 
Instant · Common · Foundations Jumpstart · #491
Choose one or both —
• Target creature gets -1/-1 until end of turn.
• Put a +1/+1 counter on target creature.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 491 | Common | $0.35 | — |
| Kaladesh | 100 | Common | $0.35 | $0.49 |
| The List | KLD-100 | Common | $0.35 | — |
| Zendikar Rising | 128 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 25 September 2020If you choose both modes and one target becomes illegal before Subtle Strike resolves, the other target is affected as appropriate.