Cheapest priced copy (Duel Decks: Izzet vs. Golgari): $0.49 at Card Kingdom, near mint, their price list as of .
Doomgape 
Creature — Elemental · 10/10 · Rare · Duel Decks: Izzet vs. Golgari · #65
Trample
At the beginning of your upkeep, sacrifice a creature. You gain life equal to that creature's toughness.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.49 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Izzet vs. Golgari | 65 | Rare | $0.49 | — |
| Eventide | 120 | Rare | $0.79 | $10.99 |
| The List | DDJ-65 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 1 August 2008If you have no other creatures to sacrifice, you’ll have to sacrifice Doomgape itself. You’ll gain life equal to its toughness.