All permanents on the battlefield (Auton Soldier as a copy of Adrix and Nev).
You have at least two opponents.
Auton Soldier does not have summoning sickness.
Captain's Claws attached to a creature that does not have summoning sickness.
Steps
Declare Auton Soldier and the creature with Captain's Claws as attackers.
Auton Soldier's myriad ability and Captain's Claws trigger.
Resolve the Auton Soldier trigger, creating four token copies of itself as a nonlegendary copy of Adrix and Nev attacking each other opponent.
Resolve the Captain's Claws trigger, creating 2^(the number of Adrix and Nevs you control) 1/1 Kor Ally creature tokens tapped and attacking an opponent.
Results
Near-infinite creature tokens that are tapped and attacking.