diff --git a/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt b/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
index 26f8e4227..7a3f1d00c 100644
--- a/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
+++ b/src/main/java/de/bixilon/minosoft/data/entities/entities/Entity.kt
@@ -20,6 +20,7 @@ import de.bixilon.minosoft.data.entities.meta.EntityMetaData
 import de.bixilon.minosoft.data.inventory.InventorySlots.EquipmentSlots
 import de.bixilon.minosoft.data.inventory.ItemStack
 import de.bixilon.minosoft.data.mappings.effects.StatusEffect
+import de.bixilon.minosoft.data.mappings.effects.attributes.StatusEffectAttribute
 import de.bixilon.minosoft.data.mappings.entities.EntityType
 import de.bixilon.minosoft.data.physics.PhysicsEntity
 import de.bixilon.minosoft.data.text.ChatComponent
@@ -45,6 +46,7 @@ abstract class Entity(
     protected val random = Random
     val equipment: MutableMap<EquipmentSlots, ItemStack> = mutableMapOf()
     val activeStatusEffects: MutableMap<StatusEffect, StatusEffectInstance> = synchronizedMapOf()
+    val modifiers: MutableMap<UUID, StatusEffectAttribute> = synchronizedMapOf()
 
     @JvmField
     protected val versionId: Int = connection.version.versionId
@@ -73,6 +75,7 @@ abstract class Entity(
     fun addEffect(effect: StatusEffectInstance) {
         // effect already applied, maybe the duration or the amplifier changed?
         activeStatusEffects[effect.statusEffect] = effect
+        // ToDo: Add status effect modifiers
     }
 
     fun removeEffect(effect: StatusEffect) {
diff --git a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffect.kt b/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffect.kt
index 7d1b694bb..9082c8728 100644
--- a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffect.kt
+++ b/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffect.kt
@@ -14,6 +14,7 @@ package de.bixilon.minosoft.data.mappings.effects
 
 import com.google.gson.JsonObject
 import de.bixilon.minosoft.data.mappings.ResourceLocation
+import de.bixilon.minosoft.data.mappings.effects.attributes.StatusEffectAttribute
 import de.bixilon.minosoft.data.mappings.registry.RegistryItem
 import de.bixilon.minosoft.data.mappings.registry.ResourceLocationDeserializer
 import de.bixilon.minosoft.data.mappings.registry.Translatable
@@ -21,6 +22,7 @@ import de.bixilon.minosoft.data.mappings.versions.Registries
 import de.bixilon.minosoft.data.text.RGBColor
 import de.bixilon.minosoft.data.text.RGBColor.Companion.asRGBColor
 import de.bixilon.minosoft.datafixer.EntityAttributeFixer.fix
+import java.util.*
 
 data class StatusEffect(
     override val resourceLocation: ResourceLocation,
@@ -28,6 +30,7 @@ data class StatusEffect(
     override val translationKey: String?,
     val color: RGBColor,
     val attributes: Map<ResourceLocation, StatusEffectAttribute>,
+    val uuidAttributes: Map<UUID, StatusEffectAttribute>,
 ) : RegistryItem, Translatable {
 
     override fun toString(): String {
@@ -37,10 +40,13 @@ data class StatusEffect(
     companion object : ResourceLocationDeserializer<StatusEffect> {
         override fun deserialize(mappings: Registries?, resourceLocation: ResourceLocation, data: JsonObject): StatusEffect {
             val attributes: MutableMap<ResourceLocation, StatusEffectAttribute> = mutableMapOf()
+            val uuidAttributes: MutableMap<UUID, StatusEffectAttribute> = mutableMapOf()
 
             data["attributes"]?.asJsonObject?.let {
                 for ((key, value) in it.entrySet()) {
-                    attributes[ResourceLocation.getResourceLocation(key).fix()] = StatusEffectAttribute.deserialize(value.asJsonObject)
+                    val attribute = StatusEffectAttribute.deserialize(value.asJsonObject)
+                    attributes[ResourceLocation.getResourceLocation(key).fix()] = attribute
+                    uuidAttributes[attribute.uuid] = attribute
                 }
             }
 
@@ -49,7 +55,8 @@ data class StatusEffect(
                 category = StatusEffectCategories.NAME_MAP[data["category"].asString]!!,
                 translationKey = data["translation_key"]?.asString,
                 color = data["color"].asInt.asRGBColor(),
-                attributes.toMap(),
+                attributes = attributes.toMap(),
+                uuidAttributes = uuidAttributes.toMap(),
             )
         }
     }
diff --git a/src/main/java/de/bixilon/minosoft/data/entities/attributes/DefaultEntityAttributes.kt b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributeNames.kt
similarity index 91%
rename from src/main/java/de/bixilon/minosoft/data/entities/attributes/DefaultEntityAttributes.kt
rename to src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributeNames.kt
index daae57b9d..716f3ddee 100644
--- a/src/main/java/de/bixilon/minosoft/data/entities/attributes/DefaultEntityAttributes.kt
+++ b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributeNames.kt
@@ -11,13 +11,11 @@
  * This software is not affiliated with Mojang AB, the original developer of Minecraft.
  */
 
-package de.bixilon.minosoft.data.entities.attributes
+package de.bixilon.minosoft.data.mappings.effects.attributes
 
 import de.bixilon.minosoft.util.KUtil.asResourceLocation
 
-object DefaultEntityAttributes {
-    // ToDo: They all had different names before 1.13
-
+object DefaultStatusEffectAttributeNames {
     val GENERIC_MAX_HEALTH = "minecraft:generic.max_health".asResourceLocation()
     val GENERIC_FOLLOW_RANGE = "minecraft:generic.follow_range".asResourceLocation()
     val GENERIC_KNOCKBACK_RESISTANCE = "minecraft:generic.knockback_resistance".asResourceLocation()
diff --git a/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributes.kt b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributes.kt
new file mode 100644
index 000000000..1aed3f415
--- /dev/null
+++ b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/DefaultStatusEffectAttributes.kt
@@ -0,0 +1,20 @@
+/*
+ * Minosoft
+ * Copyright (C) 2021 Moritz Zwerger
+ *
+ * This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This software is not affiliated with Mojang AB, the original developer of Minecraft.
+ */
+
+package de.bixilon.minosoft.data.mappings.effects.attributes
+
+import de.bixilon.minosoft.util.KUtil.asUUID
+
+object DefaultStatusEffectAttributes {
+    val SPRINT_SPEED_BOOST = StatusEffectAttribute("Sprinting speed boost", "662A6B8D-DA3E-4C1C-8813-96EA6097278D".asUUID(), 0.30000001192092896f, StatusEffectOperations.MULTIPLY_TOTAL)
+}
diff --git a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectAttribute.kt b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectAttribute.kt
similarity index 96%
rename from src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectAttribute.kt
rename to src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectAttribute.kt
index 458b033b2..bcf4617db 100644
--- a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectAttribute.kt
+++ b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectAttribute.kt
@@ -10,7 +10,7 @@
  *
  * This software is not affiliated with Mojang AB, the original developer of Minecraft.
  */
-package de.bixilon.minosoft.data.mappings.effects
+package de.bixilon.minosoft.data.mappings.effects.attributes
 
 import com.google.gson.JsonObject
 import de.bixilon.minosoft.util.Util
diff --git a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectOperations.kt b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectOperations.kt
similarity index 95%
rename from src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectOperations.kt
rename to src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectOperations.kt
index 2bf634862..6c6ac480c 100644
--- a/src/main/java/de/bixilon/minosoft/data/mappings/effects/StatusEffectOperations.kt
+++ b/src/main/java/de/bixilon/minosoft/data/mappings/effects/attributes/StatusEffectOperations.kt
@@ -11,7 +11,7 @@
  * This software is not affiliated with Mojang AB, the original developer of Minecraft.
  */
 
-package de.bixilon.minosoft.data.mappings.effects
+package de.bixilon.minosoft.data.mappings.effects.attributes
 
 import de.bixilon.minosoft.util.KUtil
 import de.bixilon.minosoft.util.enum.ValuesEnum
diff --git a/src/main/java/de/bixilon/minosoft/util/KUtil.kt b/src/main/java/de/bixilon/minosoft/util/KUtil.kt
index ec56f1131..6f08708ae 100644
--- a/src/main/java/de/bixilon/minosoft/util/KUtil.kt
+++ b/src/main/java/de/bixilon/minosoft/util/KUtil.kt
@@ -138,4 +138,8 @@ object KUtil {
             `false`
         }
     }
+
+    fun String.asUUID(): UUID {
+        return Util.getUUIDFromString(this)
+    }
 }