Errantry

Enchantment — Aura

Enchant creature
Enchanted creature gets +3/+0 and can only attack alone.

CMC
2
Mana cost
{1}{R}
Color identity
R
Rarity
common
Set
Masters Edition II
Price
EDHREC rank
#17526
Buy on TCGplayer
Errantry card art
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

01
Alexios, Deimos of Kosmos

Alexios, Deimos of Kosmos

15.5% of decks · synergy 0.15

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.

02

Slicer, Hired Muscle

14.4% of decks · synergy 0.14

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

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

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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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.