---
name: "Harrowing Swarm"
mana_cost: "{1}{G}"
cmc: 2
type_line: "Sorcery"
colors: ["G"]
color_identity: ["G"]
keywords: ["Manifest", "Manifest dread"]
set: "YDSK"
set_name: "Alchemy: Duskmourn"
collector_number: "16"
rarity: "uncommon"
artist: "John Tedrick"
oracle_id: "068e44dc-578b-4d58-b354-4077bd222e1c"
canonical_url: "https://avascry.com/printing/harrowing-swarm-ydsk"
legalities:
  commander: "not_legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "not_legal"
  vintage: "not_legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Harrowing Swarm
- **Mana Cost:** `{1}{G}` (CMC: 2)
- **Type:** Sorcery
- **Keywords:** Manifest, Manifest dread

## Oracle Text
Manifest dread. Then each face-down creature you control gains "This permanent costs {2} less to turn face up" and "When this permanent is turned face up, if it's a creature, put a +1/+1 counter on it."

## Top 4096-Dim Neural Synergies
1. [Hauntwoods Shrieker](/printing/hauntwoods-shrieker-dsk.md) — Creature — Beast Mutant
2. [Growing Dread](/printing/growing-dread-dsk.md) — Enchantment
3. [Under the Skin](/printing/under-the-skin-dsk.md) — Sorcery
4. [Manifest Dread](/printing/manifest-dread-dsk.md) — Sorcery
5. [Mastery of the Unseen](/printing/mastery-of-the-unseen-pfrf.md) — Enchantment
6. [Obscuring Aether](/printing/obscuring-aether-dtk.md) — Enchantment

## Printing Details
- **Set:** Alchemy: Duskmourn (YDSK) #16
- **Rarity:** Uncommon
- **Artist:** John Tedrick

## Format Legalities
Commander: `not_legal` | Standard: `not_legal` | Modern: `not_legal` | Pioneer: `not_legal` | Legacy: `not_legal` | Vintage: `not_legal` | Pauper: `not_legal` | Penny: `not_legal`