Cheapest priced copy (The List): $1.99 at Card Kingdom, near mint, their price list as of .
Searing Blaze 
Instant · Common · Worldwake · #90
Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.
Landfall — If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $1.99 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Venser vs. Koth | 67 | Common | $2.29 | — |
| Magic Player Rewards 2011 | 5 | Rare | $8.99 | — |
| The List | WWK-90 | Common | $1.99 | — |
| Secret Lair Drop | 2580 | Rare | $2.99 | $3.99 |
| Worldwake | 90 | Common | $1.99 | $15.99 |
7 rulings from Wizards of the Coast
- 1 March 2010If either target is illegal by the time Searing Blaze resolves, it still deals damage to the other target.
- 1 March 2010You must choose two targets as you cast Searing Blaze: a player and a creature that player controls. If you can't (because there are no creatures on the battlefield, perhaps), then you can't cast the spell.
- 8 November 2024Once the spell resolves, having a land enter under your control provides no further benefit.
- 8 November 2024Having more than one land enter the battlefield under your control this turn provides no additional benefit.
- 8 November 2024Whether you had a land enter the battlefield under your control this turn is checked as this spell resolves, not as you cast it.
- 8 November 2024The landfall ability checks for an action that has happened in the past. It doesn't matter if a land that entered the battlefield under your control previously in the turn is still on the battlefield, is still under your control, or is still a land.
- 8 November 2024The effect of this spell's landfall ability replaces its normal effect. If you had a land enter under your control this turn, only the landfall-based effect happens.