Soulfire

Soulfire is a warlock spell card, inducted into the Legacy set, formerly from the Basic set.

Strategy
If you cast this spell with no other cards in hand, you will be unable to discard a card, essentially gaining 4 damage with no penalty. It's still useful if you are willing to give up any of the cards in your hand as 4 damage is a significant amount of damage for 1 mana.

Soulfire has cheap synergy with cards such as Fist of Jaraxxus and Malchezaar's Imp which benefit from the cheap discard effect.

Lore
is a Destruction warlock spell from . It is a high damage, mana efficient spell that deals a large chunk of Fire damage to the target. The spell generally suffers from a very long cast time, but a related ability can reduce its cast time by 50% when used on low health targets, allowing it to be used as a powerful execute ability.

Trivia

 * Blizzard has commonly misspelled the World of Warcraft spell Soul Fire as Soulfire in the past.
 * The artwork for this card comes from the World of Warcraft Trading Card Game "Fields of Honor" series, for the card Cremate.

Patch changes

 * Moved from Basic to Legacy set.