Tomes of forbidden expertise, eldritch gems with unachievable angles, and wretched talismans are the type of items that hold warlocks from an untimely Dying when dealing with over they bargained for. The Metal Defender takes its turn quickly following yours. It could go and use its reaction on its own. https://spencerjeysk.blogrelation.com/34119843/considerations-to-know-about-snake-person-dnd