Cheapest priced copy (Assassin's Creed): $9.49 at Card Kingdom, near mint, their price list as of .
Battlefield Improvisation 
Instant · Common · Assassin's Creed · #276
Target creature gets +2/+2 until end of turn. If that creature is attacking, you may attach any number of Equipment you control to it.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $9.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Assassin's Creed | 276 | Common | $9.49 | — |
One ruling from Wizards of the Coast
- 5 July 2024You can't try to attach an Equipment to the target creature if that Equipment can't legally be attached to it.