Reckless Cohort
Creature — Human Warrior Ally
Reckless Cohort attacks each combat if able unless you control another Ally.
"You have a family. Mine died at Sea Gate. You go to yours, and I'll go to mine."
イラスト：
Battle for Zendikar#152コモン英語適正
裁定
Reckless Cohort can attack if you control another Ally. It just isn’t forced to.
Reckless Cohort checks whether you control another Ally as attacking creatures are declared. At that time, if you don’t, Reckless Cohort attacks if able.
If, during its controller’s declare attackers step, that player doesn’t control another Ally but Reckless Cohort is tapped, is affected by a spell or ability that says it can’t attack, or hasn’t been under that player’s control continuously since the turn began (and doesn’t have haste), then it doesn’t attack. If there’s a cost associated with having Reckless Cohort attack, its controller isn’t forced to pay that cost. If they don’t, Reckless Cohort doesn’t have to attack.