Attack alone
| Attack Alone | |
|---|---|
| Mechanic | |
| Introduced |
Ice Age (mechanic) Shards of Alara (keyword) |
| Last used | Final Fantasy |
| Scryfall Statistics | |
Attacking alone, as a concept, was first introduced with Errantry (Ice Age). It was "keyworded" as a term in Shards of Alara to provide a clearly defined trigger for the Exalted mechanic.
Kamigawa: Neon Dynasty uses attacking alone for Exalted-like triggers are mechanic for 
Samurai. Blue gets "unblockable if attacking alone".
The mechanic is also used as downside for creatures that can either only attack alone or cannot attack alone. Its strict opposite is much rarer: it's entirely downside-based and only one card has "can't block alone" (Craven Hulk) — the other seven cannot do either combat action alone.
Rules
From the glossary of the Comprehensive Rules (July 25, 2025—Edge of Eternities)
- Attack Alone
- A creature “attacks alone” if it’s the only creature declared as an attacker during the declare attackers step. A creature “is attacking alone” if it’s attacking but no other creatures are. See rule 506.5.
From the Comprehensive Rules (July 25, 2025—Edge of Eternities)
- 506.5. A creature attacks alone if it’s the only creature declared as an attacker during the declare attackers step. A creature is attacking alone if it’s attacking but no other creatures are. A creature blocks alone if it’s the only creature declared as a blocker during the declare blockers step. A creature is blocking alone if it’s blocking but no other creatures are.