---
name: "Thundering Mightmare"
mana_cost: "{4}{G}"
cmc: 5
type_line: "Creature — Horse Spirit"
colors: ["G"]
color_identity: ["G"]
keywords: ["Soulbond"]
set: "PRM"
set_name: "Magic Online Promos"
collector_number: "95413"
rarity: "rare"
artist: "Lorenzo Mastroianni"
oracle_id: "bf9a6242-b608-46ef-a059-7e757dd52e9b"
canonical_url: "https://avascry.com/printing/thundering-mightmare-prm"
legalities:
  commander: "legal"
  standard: "not_legal"
  modern: "not_legal"
  pioneer: "not_legal"
  legacy: "legal"
  vintage: "legal"
  pauper: "not_legal"
  penny: "not_legal"
---

# Thundering Mightmare
- **Mana Cost:** `{4}{G}` (CMC: 5)
- **Type:** Creature — Horse Spirit
- **Power/Toughness:** 3/3
- **Keywords:** Soulbond

## Oracle Text
Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)
As long as Thundering Mightmare is paired with another creature, each of those creatures has "Whenever an opponent casts a spell, put a +1/+1 counter on this creature."

## Top 4096-Dim Neural Synergies
1. [Trusted Forcemage](/printing/trusted-forcemage-avr.md) — Creature — Human Shaman
2. [Druid's Familiar](/printing/druids-familiar-avr.md) — Creature — Bear
3. [Geist Trappers](/printing/geist-trappers-avr.md) — Creature — Human Warrior
4. [Lightning Mauler](/printing/lightning-mauler-avr.md) — Creature — Human Berserker
5. [Spectral Gateguards](/printing/spectral-gateguards-ddq.md) — Creature — Spirit Soldier
6. [Elgaud Shieldmate](/printing/elgaud-shieldmate-avr.md) — Creature — Human Soldier

## Printing Details
- **Set:** Magic Online Promos (PRM) #95413
- **Rarity:** Rare
- **Artist:** Lorenzo Mastroianni
- **Total Printings:** 14 across all historical editions

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