If you have fought a gargoyle, you’ve probably seen them use a move that shoots out an airwave in your direction as they slice downward with their weapon. This devastating move that looks like the attack that the Storm Ruler from Dark Souls uses is called Vacuum Slice and it can be your best friend. Here is where you can find the Ash of War: Vacuum Slice in Elden Ring.
To find this weapon art, you first need to make your way to Deeproot Depths. This area isn’t immediately accessible and you will first need to defeat Radahn to open the way to Nokron. Once inside Nokron, make your way north to the aqueduct dungeon. Inside, you will find the Valiant Gargoyle boss. Be careful during this fight since you will actually be fighting two gargoyles at once. After the fight, go to the base of the waterfall and you will find a coffin that you can rest in. Resting in the coffin will initiate a cutscene that takes you to Deeproot Depths.
Once you reach Deeproot Depths, make your way across the tree roots to the area with the ruins. Be careful to avoid the many flying ant enemies in the area leading up to it and the flame-spewing gargoyle waiting at the start of the ruins. At the ruins, look for a gazebo that has the map in it. Next to the gazebo, you will see a building with an open door and some enemies inside. There is only one enemy, the others are dead bodies. Run into this room and get behind the gargoyle enemy inside. Destroy the gargoyle to obtain the weapon art.