2017-09-29 : Atzocan Archer’s ability can target another creature you control (such as a Dinosaur with an enrage ability).

2017-09-29 : If Atzocan Archer isn’t on the battlefield as its triggered ability resolves, or if the target of that ability is illegal, no creature will deal or be dealt damage.

2017-09-29 : You must choose another target creature (if able) as Atzocan Archer’s triggered ability is put on the stack. You choose as that ability resolves whether those creatures fight.