Bonded Construct

If you control more than one creature that can’t attack alone, they can attack together, even if no other creatures attack.

Bonded Construct can be declared as an attacker only if another creature is declared as an attacker at the same time.

Although Bonded Construct can’t attack alone, other attacking creatures don’t have to attack the same player or planeswalker. For example, Bonded Construct could attack an opponent and another creature could attack a planeswalker that opponent controls.