Simple Magic Spellbook System (#7823)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/Spawners/EntitySystems/TimedDespawnSystem.cs

@@ -0,0 +1,19 @@
+using Content.Server.Spawners.Components;
+
+namespace Content.Server.Spawners.EntitySystems;
+
+public sealed class TimedDespawnSystem : EntitySystem
+{
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+
+        foreach (var entity in EntityQuery<TimedDespawnComponent>())
+        {
+            entity.Lifetime -= frameTime;
+
+            if (entity.Lifetime <= 0)
+                EntityManager.QueueDeleteEntity(entity.Owner);
+        }
+    }
+}