Cheapest priced copy (Eighth Edition): $0.49 at Card Kingdom, near mint, their price list as of .
Primeval Force 
Creature — Elemental · 8/8 · Rare · Portal · #182
When this creature enters, sacrifice it unless you sacrifice three Forests.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.49 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eighth Edition | 273 | Rare | $0.49 | — |
| Eighth Edition | 273★ | Rare | — | $2.49 |
| Portal | 182 | Rare | $0.49 | — |