Cheapest priced copy (Champions of Kamigawa): $0.59 at Card Kingdom, near mint, their price list as of .
Soulblast 
Instant · Rare · Tenth Edition · #236
As an additional cost to cast this spell, sacrifice all creatures you control.
Soulblast deals damage to any target equal to the total power of the sacrificed creatures.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.59 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 236 | Rare | $1.79 | $2.49 |
| Champions of Kamigawa | 190 | Rare | $0.59 | $3.49 |