Tapping into the lingering magic of the creation forge of your automaton design, you gain the following features:

Ability Score Increase. Increase an ability score of your choice by 1, to a maximum of 20.

You learn the Mending cantrip, and can cast it without material components.

Ablative Shell. When you or another creature you can see within 5 feet of you is hit by an attack roll, you can use your reaction to trigger an ablative field around the target. You grant a bonus to the target's AC equal to your proficiency bonus against that attack roll, potentially causing it to miss. You can use this reaction a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.