Cheapest priced copy (Innistrad: Double Feature): $0.35 at Card Kingdom, near mint, their price list as of .
Massive Might 
Instant · Common · Innistrad: Crimson Vow · #208
Target creature gets +2/+2 and gains trample until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 475 | Common | $0.35 | $1.49 |
| The List | VOW-208 | Common | $0.35 | — |
| Innistrad: Crimson Vow | 208 | Common | $0.35 | $0.49 |