Soul Spike
Coldsnap — rare
Instant
Soul Spike rulings:
2006-07-15: You may pay the alternative cost rather than the card’s mana cost. Any additional costs are paid as normal.
2006-07-15: If 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.
2006-07-15: You 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.