Cheapest priced copy (Innistrad): $0.59 at Card Kingdom, near mint, their price list as of .
Mindshrieker 
Creature — Spirit Bird · 1/1 · Rare · Innistrad · #67
Flying
{2}: Target player mills a card. This creature gets +X/+X until end of turn, where X is the milled card's mana value.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.59 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad | 67 | Rare | $0.59 | $4.49 |