Cheapest priced copy (Edge of Eternities): $0.59 at Card Kingdom, near mint, their price list as of .
Glacier Godmaw 
Creature — Leviathan · 6/6 · Uncommon · Edge of Eternities · #188
Trample
When this creature enters, create a Lander token. (It's an artifact with "{2}, {T}, Sacrifice this token: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.")
Landfall — Whenever a land you control enters, creatures you control get +1/+1 and gain vigilance and haste until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.59 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities | 188 | Uncommon | $0.59 | $0.79 |
| The List | EOE-188 | Uncommon | — | — |