Elden Ring: Where to find the Carian Retaliation Ash of War

In Elden Ring, Carian Retaliation is one of the most useful shield-based Ashes of War, transforming parried incoming spells into retaliatory Glintstone daggers that deliver high damage. The daggers' damage scales with the upgrade level of the shield and the power of the reflected spell, implying that the more powerful the magic, the higher the counter damage. It's also capable of carrying weapons on its own. To discover Carian Retaliation, first complete Ranni's questline until she accepts you into her service, then proceed east from Selivus's Rise.

Dropdown onto the stone roof, then onto a lower platform, and finally down the ladder inside the structure. Speak with Pidia, Carian Merchant twice to have his merchandise available for purchase. One of his things for sale is Carian Retaliation, which costs 3,000 runes. He has a Larval Tear for respecting stats, Celestial Dew for absolution, and a Ritual Pot for flinging items, among other things.

Finally, go to Master Hewg or any Site of Grace and apply Carian Retaliation on any shield that can handle it, then begin parrying every spell or incantation that comes close to matching its power. It's worth noting that it also serves as a regular parry, so if worn on a buckler or other shield with high parry frames, it can serve as both spell and weapon defense.