Cheapest priced copy (Duskmourn: House of Horror): $0.49 at Card Kingdom, near mint, their price list as of .
The Swarmweaver 
Legendary Artifact Creature — Scarecrow · 2/3 · Rare · Duskmourn: House of Horror · #301
When The Swarmweaver enters, create two 1/1 black and green Insect creature tokens with flying.
Delirium — As long as there are four or more card types among cards in your graveyard, Insects and Spiders you control get +1/+1 and have deathtouch.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
5 printings · $0.49 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror | 236 | Rare | $0.69 | $0.79 |
| Duskmourn: House of Horror | 301 | Rare | $0.49 | $0.49 |
| Duskmourn: House of Horror | 363 | Rare | $0.49 | $1.99 |
| Duskmourn: House of Horror Promos | 236p | Rare | $0.59 | $0.99 |
| Duskmourn: House of Horror Promos | 236s | Rare | — | $1.29 |