Magic: The Gathering Comprehensive Rules Changes - Eventide to Shards of Alara

Old rule (Eventide)	New rule (Shards of Alara)
Attack Alone [Click to view all changes.]
Attack Alone A creature is attacking alone when it's the only creature declared as an attacker in a given combat phase. See rule 306.5.	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 306.5.

Old rule (Eventide)

New rule (Shards of Alara)

Attack Alone [Click to view all changes.]

Attack Alone

A creature is attacking alone when it's the only creature declared as an attacker in a given combat phase. See rule 306.5.

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 306.5.