Cheapest priced copy (Khans of Tarkir): $0.35 at Card Kingdom, near mint, their price list as of .
Feed the Clan 
Instant · Common · The List · #KTK-132
You gain 5 life.
Ferocious — You gain 10 life instead if you control a creature with power 4 or greater.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Khans of Tarkir | 132 | Common | $0.35 | $1.99 |
| The List | KTK-132 | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 20 September 2014Ferocious abilities of instants and sorceries that don’t use the word “instead” will provide an additional effect if you control a creature with power 4 or greater as they resolve.
- 20 September 2014Some ferocious abilities that appear on instants and sorceries use the word “instead.” These spells have an upgraded effect if you control a creature with power 4 or greater as they resolve. For these, you only get the upgraded effect, not both effects.