diff --git a/app/controllers/api/v1/collection_artifacts_controller.rb b/app/controllers/api/v1/collection_artifacts_controller.rb
index 50fd188..14030b0 100644
--- a/app/controllers/api/v1/collection_artifacts_controller.rb
+++ b/app/controllers/api/v1/collection_artifacts_controller.rb
@@ -9,7 +9,7 @@ module Api
       before_action :set_collection_artifact_for_read, only: %i[show]
 
       # Write actions: require auth, use current_user
-      before_action :restrict_access, only: %i[create update destroy batch import]
+      before_action :restrict_access, only: %i[create update destroy batch batch_destroy import]
       before_action :set_collection_artifact_for_write, only: %i[update destroy]
 
       def index
@@ -19,6 +19,12 @@ module Api
         @collection_artifacts = @collection_artifacts.where(element: params[:element]) if params[:element]
         @collection_artifacts = @collection_artifacts.joins(:artifact).where(artifacts: { rarity: params[:rarity] }) if params[:rarity]
 
+        # Skill filters - each slot uses OR logic, slots combined with AND logic
+        @collection_artifacts = @collection_artifacts.with_skill_in_slot(1, params[:skill1]) if params[:skill1].present?
+        @collection_artifacts = @collection_artifacts.with_skill_in_slot(2, params[:skill2]) if params[:skill2].present?
+        @collection_artifacts = @collection_artifacts.with_skill_in_slot(3, params[:skill3]) if params[:skill3].present?
+        @collection_artifacts = @collection_artifacts.with_skill_in_slot(4, params[:skill4]) if params[:skill4].present?
+
         @collection_artifacts = @collection_artifacts.paginate(page: params[:page], per_page: params[:limit] || 50)
 
         render json: Api::V1::CollectionArtifactBlueprint.render(
@@ -127,6 +133,17 @@ module Api
         }, status: status
       end
 
+      # DELETE /collection/artifacts/batch_destroy
+      # Deletes multiple collection artifacts in a single request
+      def batch_destroy
+        ids = batch_destroy_params[:ids] || []
+        deleted_count = current_user.collection_artifacts.where(id: ids).destroy_all.count
+
+        render json: {
+          meta: { deleted: deleted_count }
+        }, status: :ok
+      end
+
       private
 
       def set_target_user
@@ -181,6 +198,10 @@ module Api
           data: params[:data]&.to_unsafe_h
         }
       end
+
+      def batch_destroy_params
+        params.permit(ids: [])
+      end
     end
   end
 end
diff --git a/app/models/collection_artifact.rb b/app/models/collection_artifact.rb
index 35f43fb..96f6300 100644
--- a/app/models/collection_artifact.rb
+++ b/app/models/collection_artifact.rb
@@ -48,6 +48,19 @@ class CollectionArtifact < ApplicationRecord
   scope :standard_only, -> { joins(:artifact).where(artifacts: { rarity: :standard }) }
   scope :quirk_only, -> { joins(:artifact).where(artifacts: { rarity: :quirk }) }
 
+  # Filter by skill modifier in a specific slot (1-4)
+  # Uses OR logic when multiple modifiers are provided
+  scope :with_skill_in_slot, ->(slot, modifiers) {
+    return all if modifiers.blank?
+
+    modifiers = Array(modifiers).map(&:to_s)
+    column = "skill#{slot}"
+
+    # Build OR conditions for multiple modifiers
+    conditions = modifiers.map { |_| "#{column}->>'modifier' = ?" }.join(' OR ')
+    where(conditions, *modifiers)
+  }
+
   # Returns the effective proficiency - from instance for quirk, from artifact for standard
   def effective_proficiency
     quirk_artifact? ? proficiency : artifact&.proficiency