Cheapest priced copy (Scars of Mirrodin): $0.99 at Card Kingdom, near mint, their price list as of .
Molten-Tail Masticore 
Artifact Creature — Masticore · 4/4 · Mythic · Scars of Mirrodin · #177
At the beginning of your upkeep, sacrifice this creature unless you discard a card.
{4}, Exile a creature card from your graveyard: This creature deals 4 damage to any target.
{2}: Regenerate this creature.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.99 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Scars of Mirrodin | 177 | Mythic | $0.99 | $2.49 |