Cheapest priced copy (Marvel Super Heroes Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Molten Lavamancer 
Creature — Elemental Warlock Villain · 2/3 · Uncommon · Marvel Super Heroes Commander · #699
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Whenever a source you control deals noncombat damage to one or more of your opponents during your turn, you create a 1/1 red Elemental creature token. This ability triggers only once each turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 699 | Uncommon | $0.35 | $0.49 |