Margit's and Mohg's Shackle can raise the pedestal in Auriza Hero's Grave that will destroy the chariots.

Which way should your shackle be rigged to the crane hook? Pin up or pin down? As with many rigging questions, the answer is… it depends. We need to first look and see what is going on below the hook. If more than one sling is attached to your shackle, first of all, you need to ensure that you are using an anchor or bow shackle. The kind with a round bow. Second, the slings should be seated in the bow part of the shackle and not the pin. The lifting hook, or what is attaching your shackle to you

Elden Ring: Mohg, Lord of Blood Boss Guide

You can use Mohg's and Margit's Shackle to lower the fire-breathing traps.

Mohg's Shackle | Elden Ring Wiki

How to obtain and use Mohg’s Shackle in Elden Ring

100% consistent Mohg script - easy and works at low level