Loyal Unicorn
Creature — Unicorn
Vigilance
Lieutenant — At the beginning of combat on your turn, if you control your commander, prevent all combat damage that would be dealt to creatures you control this turn. Other creatures you control gain vigilance until end of turn.
- CMC
- 4
- Mana cost
- Color identity
- W
- Rarity
- uncommon
- Set
- Commander Masters
- Price
- $0.25
- EDHREC rank
- #6384
Loyal Unicorn gives your whole team vigilance and prevents all combat damage to your creatures until end of turn — every turn you have your commander out, for free. The catch is the lieutenant clause: the effect does nothing without your commander on the battlefield, which makes it a liability in the command zone or in decks that don't protect their commander. Thurid, Mare of Destiny changes that calculus entirely, turning Loyal Unicorn into a near-guaranteed two-for-one every combat step.
Best Commanders
Commanders with the highest synergy
Thurid, Mare of Destiny
Thurid, Mare of Destiny is the defining home — Loyal Unicorn's lieutenant ability is active almost every turn, and the combination of vigilance plus damage prevention means Thurid's creatures swing freely without fear of losing board presence to combat trades.
Lathiel, the Bounteous Dawn
Lathiel, the Bounteous Dawn wants creatures surviving combat so life gain triggers keep stacking, and Loyal Unicorn's damage prevention keeps Lathiel's team alive through blocks long enough to convert that life gain into counters.
Emiel the Blessed
Emiel the Blessed blinks creatures for value, and Loyal Unicorn pairs well because vigilance lets your whole board swing and still hold up blockers — Emiel can even reset Loyal Unicorn itself if needed to re-trigger any enters-the-battlefield effects.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Loyal Unicorn is a Commander card through and through — the lieutenant mechanic is built for a format where your commander sits in the zone reliably, and the table-wide vigilance plus damage prevention is exactly the kind of grinding advantage multiplayer rewards. In Legacy and Vintage it's technically legal but competes in formats that end games before a 3/3 with a conditional upkeep trigger can matter. Oathbreaker gives it a slightly better shot than those eternal formats since the oathbreaker functions like a commander, keeping the lieutenant clause live, but the card pool and lower creature density make it fringe at best.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.25 bulk tier
At $0.25, Loyal Unicorn is pure bulk — a pickup you throw in a cart without thinking. It won't appreciably gain or lose value, but in Thurid, Mare of Destiny decks where it's essentially an auto-include in over 90% of builds, having a personal copy is just practical.
Explore
Sources
Mentioned
- Thurid, Mare of Destiny
- Lathiel, the Bounteous Dawn
- Emiel the Blessed
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.