Its designs are consistently the most popular among high-end collectors, creating a self-sustaining cycle of high demand and high prices.
On the other hand, Shining Shoal has never been reprinted and Betrayers of Kamigawa is super old and wasn't heavily opened back during its day, which means supply isn't especially high
Only 6 copies of this card are believed to have been printed, and in its latest sales record, it traded for $6,000
Unlike Heavy Storm Duster, which has a similar effect, it is a Quick-Play Spell, so it can be used as soon as it is drawn
Planetary Parasite: Planet Pollutant Virus implies that this is the aftermath of an A-Counter infestation
Legolas, Counter of Kills Nerfed beyond combo realm on the untapping, Legolas, Counter of Kills is thus infuriating