Cheapest priced copy (Coldsnap): $29.99 at Card Kingdom, near mint, their price list as of .
Soul Spike 
Instant · Rare · Coldsnap · #70
You may exile two black cards from your hand rather than pay this spell's mana cost.
Soul Spike deals 4 damage to any target and you gain 4 life.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $29.99 to $84.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Coldsnap | 70 | Rare | $29.99 | $84.99 |
| Secret Lair Drop | 2713 | Rare | — | — |
3 rulings from Wizards of the Coast
- 15 July 2006You can’t exile a card from your hand to pay for itself. At the time you would pay costs, that card is on the stack, not in your hand.
- 15 July 2006If you don’t have two cards of the right color in your hand, you can’t choose to cast the spell using the alternative cost.
- 15 July 2006You may pay the alternative cost rather than the card’s mana cost. Any additional costs are paid as normal.