Cheapest priced copy (Marvel Super Heroes Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Extract Power 
Sorcery · Rare · Marvel Super Heroes Commander · #328
Look at the top card of each player's library, then exile those cards face down. You may play them without paying their mana costs for as long as they remain exiled.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.49 to $1.29 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 29 | Rare | $0.49 | $0.49 |
| Marvel Super Heroes Commander | 328 | Rare | $1.29 | — |