diff --git a/src/components.rs b/src/components.rs
index 97ee2ad..000624c 100644
--- a/src/components.rs
+++ b/src/components.rs
@@ -433,3 +433,13 @@ pub struct ProvidesMana {
 pub struct TeachesSpell {
     pub spell: String,
 }
+
+#[derive(Component, Debug, Serialize, Deserialize, Clone)]
+pub struct Slow {
+    pub initiative_penalty: f32,
+}
+
+#[derive(Component, Debug, Serialize, Deserialize, Clone)]
+pub struct DamageOverTime {
+    pub damage: i32,
+}
diff --git a/src/main.rs b/src/main.rs
index 2cac31e..c335adb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -92,6 +92,7 @@ fn init_state() -> State {
         Confusion,
         Consumable,
         CursedItem,
+        DamageOverTime,
         Door,
         DMSerializationHelper,
         Duration,
@@ -136,6 +137,7 @@ fn init_state() -> State {
         SimpleMarker<SerializeMe>,
         SingleActivation,
         Skills,
+        Slow,
         SpawnParticleBurst,
         SpawnParticleLine,
         SpellTemplate,
diff --git a/src/raws/rawmaster.rs b/src/raws/rawmaster.rs
index d9d159c..b28ce91 100644
--- a/src/raws/rawmaster.rs
+++ b/src/raws/rawmaster.rs
@@ -293,6 +293,11 @@ macro_rules! apply_effects {
                         mana_amount: effect.1.parse::<i32>().unwrap(),
                     })
                 }
+                "teach_spell" => {
+                    $eb = $eb.with(TeachesSpell {
+                        spell: effect.1.to_string(),
+                    })
+                }
                 "ranged" => {
                     $eb = $eb.with(Ranged {
                         range: effect.1.parse::<i32>().unwrap(),
@@ -322,9 +327,14 @@ macro_rules! apply_effects {
                 "particle" => $eb = $eb.with(parse_particle(&effect.1)),
                 "remove_curse" => $eb = $eb.with(ProvidesRemoveCurse {}),
                 "identify" => $eb = $eb.with(ProvidesIdentification {}),
-                "teach_spell" => {
-                    $eb = $eb.with(TeachesSpell {
-                        spell: effect.1.to_string(),
+                "slow" => {
+                    $eb = $eb.with(Slow {
+                        initiative_penalty: effect.1.parse::<f32>().unwrap(),
+                    })
+                }
+                "damage_over_time" => {
+                    $eb = $eb.with(DamageOverTime {
+                        damage: effect.1.parse::<i32>().unwrap(),
                     })
                 }
                 _ => {
diff --git a/src/saveload_system.rs b/src/saveload_system.rs
index 257d210..f526d45 100644
--- a/src/saveload_system.rs
+++ b/src/saveload_system.rs
@@ -71,6 +71,7 @@ pub fn save_game(ecs: &mut World) {
             Confusion,
             Consumable,
             CursedItem,
+            DamageOverTime,
             Door,
             DMSerializationHelper,
             Duration,
@@ -114,6 +115,7 @@ pub fn save_game(ecs: &mut World) {
             SerializationHelper,
             SingleActivation,
             Skills,
+            Slow,
             SpawnParticleBurst,
             SpawnParticleLine,
             SpellTemplate,
@@ -199,6 +201,7 @@ pub fn load_game(ecs: &mut World) {
             Confusion,
             Consumable,
             CursedItem,
+            DamageOverTime,
             Door,
             DMSerializationHelper,
             Duration,
@@ -241,6 +244,7 @@ pub fn load_game(ecs: &mut World) {
             Renderable,
             SerializationHelper,
             SingleActivation,
+            Slow,
             Skills,
             SpawnParticleBurst,
             SpawnParticleLine,