Plague Mare
Creature — Nightmare Horse
This creature can't be blocked by white creatures.
When this creature enters, creatures your opponents control get -1/-1 until end of turn.
- CMC
- 3
- Mana cost
- Color identity
- B
- Rarity
- uncommon
- Set
- Core Set 2019
- Price
- $0.29
- EDHREC rank
- #14643
Plague Mare enters and forces every opponent to sacrifice a non-Horse creature, then sticks around as a 2/2 with menace for two mana. That's a removal spell stapled to a body at instant-speed-adjacent timing, and the cost is almost nothing.
Best Commanders
Commanders with the highest synergy

Maha, Its Feathers Night
Maha, Its Feathers Night cares about life loss and battlefield control, and Plague Mare delivers a guaranteed creature removal trigger the turn it arrives — clearing blockers while contributing a menace body that pressures multiple opponents at once.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
In Commander, Plague Mare punches above its mana cost because the sacrifice effect hits all opponents simultaneously — one card answers up to three creatures at once, which almost no two-drop achieves. The menace body is incidental but real, especially in aristocrats or black aggro builds that want every creature to threaten damage. In competitive 1v1 formats like Modern and Pioneer, the effect is narrower — sacrificing one creature rarely generates card advantage, and the 2/2 stat line is underpowered for those metagames. Legacy and Vintage have so many superior options that Plague Mare simply doesn't compete there. Commander is where this card earns its slot.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.29 bulk tier
At $0.29, Plague Mare is deep bulk — you're paying almost nothing for a multi-target removal effect that would cost real mana in other forms. Bulk rares at this price point rarely appreciate unless they spike in a popular Commander archetype, so buy it for the effect, not the spec.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.