
Bonded Construct | Artifact Creature | Construct | Bonded Construct can't attack alone. | Craig J Spearing

Chief of the Foundry | Artifact Creature | Construct | Other artifact creatures you control get +1/+1. | Daniel Ljunggren

Gold-Forged Sentinel | Artifact Creature | Chimera | Flying | James Zapata

Guardian Automaton | Artifact Creature | Construct | When Guardian Automaton dies, you gain 3 life. | Vincent Proce

Guardians of Meletis | Artifact Creature | Golem | Defender (This creature can't attack.) | Magali Villeneuve

Hangarback Walker | Artifact Creature | Construct | Hangarback Walker enters the battlefield with X +1/+1 counters on it.
When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker.
{1}, {T}: Put a +1/+1 counter on Hangarback Walker. | Daarken

Mage-Ring Responder | Artifact Creature | Golem | Mage-Ring Responder doesn't untap during your untap step.
{7}: Untap Mage-Ring Responder.
Whenever Mage-Ring Responder attacks, it deals 7 damage to target creature defending player controls. | Adam Paquette

Ramroller | Artifact Creature | Juggernaut | Ramroller attacks each combat if able.
Ramroller gets +2/+0 as long as you control another artifact. | Craig J Spearing

Runed Servitor | Artifact Creature | Construct | When Runed Servitor dies, each player draws a card. | Mike Bierek