Cheapest priced copy (Modern Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Blightspeaker 
Creature — Human Rebel Cleric · 1/1 · Common · Planar Chaos · #64
{T}: Target player loses 1 life.
{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Masters | 73 | Common | $0.35 | $0.49 |
| Planar Chaos | 64 | Common | $0.35 | $0.49 |
| Time Spiral Remastered | 103 | Common | $0.35 | $0.49 |