Cheapest priced copy (Marvel Super Heroes Commander): $0.49 at Card Kingdom, near mint, their price list as of .
King Solomon's Frogs 
Legendary Artifact · Rare · Marvel Super Heroes Commander · #312
Flash
When King Solomon's Frogs enters, if you cast it, for each opponent, exile up to one target permanent that player controls with mana value 3 or greater. For each permanent exiled this way, its controller draws a card.
{3}, {T}, Exile King Solomon's Frogs: You become the monarch.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 20 | Rare | $0.49 | $1.99 |
| Marvel Super Heroes Commander | 312 | Rare | $1.99 | — |