Errantry
Enchantment — Aura
Enchant creature
Enchanted creature gets +3/+0 and can only attack alone.
- CMC
- 2
- Mana cost
- Color identity
- R
- Rarity
- common
- Set
- Masters Edition II
- Price
- —
- EDHREC rank
- #17526
Errantry gives one creature +4/+0 for two mana — a massive stat boost that comes with a hard lock: that creature can only block or attack alone. Outside of decks that specifically weaponize that restriction, the trade-off is crippling; Alexios, Deimos of Kosmos is the clearest reason to run it.
Best Commanders
Commanders with the highest synergy

Alexios, Deimos of Kosmos
Alexios, Deimos of Kosmos triggers off dealing combat damage, and Errantry turns a single threat into something that punches through for massive damage reliably — the attack-alone restriction barely registers when you're hunting for a single successful hit to copy spells.
Slicer, Hired Muscle
Slicer, Hired Muscle gets donated to opponents and swings at them anyway, so Errantry's attack-alone clause mostly hurts the opponent whose turn it is — turning Slicer into an 8/4 that attacks solo fits the card's chaos gameplan cleanly.
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 | legal |
| oathbreaker | legal |
Errantry is legal in Commander, Legacy, Vintage, Pauper, and Oathbreaker. In Commander it's a niche inclusion — the +4/+0 is eye-catching but the restriction kills it in any deck that needs to swing a full board, so it belongs only in builds that want a single evasive threat to connect repeatedly. In Pauper it has no meaningful home; aggressive red and white strategies have better pump options without the downside. Legacy and Vintage have zero interest — the card doesn't interact with anything powerful enough to justify a deck slot.
Key Combos
Combo lines featuring this card
Price Context
Current price
unknown tier
Pricing data for Errantry isn't currently available, but as an old enchantment with minimal competitive demand it typically sits well under a dollar in the bulk bin. Pick it up if your Alexios or Slicer list calls for it — there's no reason to hesitate on price.
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Sources
Mentioned
- Alexios, Deimos of Kosmos
- Slicer, Hired Muscle
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.