---
name: "Blowfly Infestation"
mana_cost: "{2}{B}"
cmc: 3
type_line: "Enchantment"
colors: []
color_identity: ["B"]
keywords: []
set: "SHM"
set_name: "Shadowmoor"
collector_number: "58"
rarity: "uncommon"
artist: "Caio Monteiro"
oracle_id: "3859873f-2a0f-463b-8ed9-7f2ab5ed393a"
canonical_url: "https://avascry.com/printing/blowfly-infestation-shm"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Blowfly Infestation
- **Mana Cost:** `{2}{B}` (CMC: 3)
- **Type:** Enchantment

## Oracle Text
Whenever a creature dies, if it had a -1/-1 counter on it, put a -1/-1 counter on target creature.

## Top 4096-Dim Neural Synergies
1. [Festering Mummy](/printing/festering-mummy-akh.md) — Creature — Zombie
2. [Shambling Swarm](/printing/shambling-swarm-tor.md) — Creature — Horror
3. [Nest of Scarabs](/printing/nest-of-scarabs-akh.md) — Enchantment
4. [Swarm of Bloodflies](/printing/swarm-of-bloodflies-jmp.md) — Creature — Insect
5. [Crumbling Ashes](/printing/crumbling-ashes-eve.md) — Enchantment
6. [Spinal Centipede](/printing/spinal-centipede-grn.md) — Creature — Insect

## Printing Details
- **Set:** Shadowmoor (SHM) #58
- **Rarity:** Uncommon
- **Artist:** Caio Monteiro
- **Total Printings:** 2 across all historical editions

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

## Official Rulings
- *(2008-05-01)* When Blowfly Infestation's ability resolves, it will put a single -1/-1 counter on the targeted creature. It doesn't matter how many -1/-1 counters were on the creature that went to a graveyard as long as it had at least one on it.
- *(2008-05-01)* This ability is mandatory. If you're the only player who controls any creatures when this ability triggers, you must target one of them.