Frenzy shards are a material that you get from taking on special fights in Monster Hunter Wilds. The item is a must if you want to craft certain sets of armor, like the Feylne Artian set.
Set a waypoint straight to the monster to go get your Frenzy Shards! Talismans are equippable items that allow you to add specific skills to your character without having to change your Armor Set ...