---
name: "Mercurial Geists"
mana_cost: "{2}{U}{R}"
cmc: 4
type_line: "Creature — Spirit"
colors: ["R", "U"]
color_identity: ["R", "U"]
keywords: ["Flying"]
set: "EMN"
set_name: "Eldritch Moon"
collector_number: "186"
rarity: "uncommon"
artist: "Lake Hurwitz"
oracle_id: "1f6bff6c-a2f0-4ed7-8169-acb4d31a7187"
canonical_url: "https://avascry.com/printing/mercurial-geists-emn"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "legal"
  pioneer: "legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Mercurial Geists
- **Mana Cost:** `{2}{U}{R}` (CMC: 4)
- **Type:** Creature — Spirit
- **Power/Toughness:** 1/3
- **Keywords:** Flying

## Oracle Text
Flying
Whenever you cast an instant or sorcery spell, this creature gets +3/+0 until end of turn.

> *„Fehleranalyse: Die Provokation von Geistern zum Zweck erhöhter Energiefreisetzung kann die Wirksamkeit von Eindämmungsbehältnissen herabsetzen. Nächster Schritt: Chaos beseitigen." —Versuchsnotizen*

## Top 4096-Dim Neural Synergies
1. [Umara Mystic](/printing/umara-mystic-znr.md) — Creature — Merfolk Wizard
2. [A-Umara Mystic](/printing/a-umara-mystic-znr.md) — Creature — Merfolk Wizard
3. [Aven Wind Mage](/printing/aven-wind-mage-m19.md) — Creature — Bird Wizard
4. [Wee Dragonauts](/printing/wee-dragonauts-prm.md) — Creature — Faerie Wizard
5. [Battleground Geist](/printing/battleground-geist-isd.md) — Creature — Spirit
6. [Sky Theater Strix](/printing/sky-theater-strix-war.md) — Creature — Bird

## Printing Details
- **Set:** Eldritch Moon (EMN) #186
- **Rarity:** Uncommon
- **Artist:** Lake Hurwitz
- **Total Printings:** 13 across all historical editions

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