diff --git a/src/main/java/com/volmit/iris/engine/framework/Engine.java b/src/main/java/com/volmit/iris/engine/framework/Engine.java
index 9620cff6c..aebca9521 100644
--- a/src/main/java/com/volmit/iris/engine/framework/Engine.java
+++ b/src/main/java/com/volmit/iris/engine/framework/Engine.java
@@ -402,4 +402,9 @@ public interface Engine extends DataProvider, Fallible, GeneratorAccess, LootPro
     IrisBiome getFocus();
 
     void hotloading();
+
+    default void saveProperties()
+    {
+
+    }
 }
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisDuration.java b/src/main/java/com/volmit/iris/engine/object/IrisDuration.java
new file mode 100644
index 000000000..0b56ee896
--- /dev/null
+++ b/src/main/java/com/volmit/iris/engine/object/IrisDuration.java
@@ -0,0 +1,80 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2021 Arcane Arts (Volmit Software)
+ *
+ * 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/>.
+ */
+
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.engine.object.annotations.Desc;
+import com.volmit.iris.util.format.Form;
+import lombok.Data;
+import org.bukkit.World;
+
+import java.util.concurrent.TimeUnit;
+
+@Data
+@Desc("Represents a combined duration. Fill each property to add time into a single duration")
+public class IrisDuration {
+    @Desc("Milliseconds (1000ms = 1 second)")
+    private int milliseconds = 0;
+
+    @Desc("Minecraft Ticks (20 minecraft ticks = 1 second")
+    private int minecraftTicks = 0;
+
+    @Desc("Seconds (60 seconds = 1 minute)")
+    private int seconds = 0;
+
+    @Desc("Minutes (60 minutes = 1 hour)")
+    private int minutes = 0;
+
+    @Desc("Minecraft Hours (about 50 real seconds)")
+    private int minecraftHours = 0;
+
+    @Desc("Hours (24 hours = 1 day)")
+    private int hours = 0;
+
+    @Desc("Minecraft Days (1 minecraft day = 20 real minutes)")
+    private int minecraftDays = 0;
+
+    @Desc("Minecraft Weeks (1 minecraft week = 2 real hours and 18 real minutes)")
+    private int minecraftWeeks = 0;
+
+    @Desc("Minecraft Lunar Cycles (1 minecraft lunar cycle = 2 real hours and 36 real minutes)")
+    private int minecraftLunarCycles = 0;
+
+    @Desc("REAL (not minecraft) Days")
+    private int days = 0;
+
+    public String toString()
+    {
+        return Form.duration((double) toMilliseconds(), 2);
+    }
+
+    public long toMilliseconds()
+    {
+        return getMilliseconds()
+                + TimeUnit.SECONDS.toMillis(getSeconds())
+                + TimeUnit.MINUTES.toMillis(getMinutes())
+                + TimeUnit.HOURS.toMillis(getHours())
+                + TimeUnit.DAYS.toMillis(getDays())
+                + (getMinecraftTicks() * 50L)
+                + (getMinecraftHours() * 50000L)
+                + (getMinecraftWeeks() * 50000L)
+                + (getMinecraftDays() * 24000L)
+                + (getMinecraftWeeks() * 168000L)
+                + (getMinecraftLunarCycles() * 192000L);
+    }
+}
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisRate.java b/src/main/java/com/volmit/iris/engine/object/IrisRate.java
new file mode 100644
index 000000000..b263a3092
--- /dev/null
+++ b/src/main/java/com/volmit/iris/engine/object/IrisRate.java
@@ -0,0 +1,54 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2021 Arcane Arts (Volmit Software)
+ *
+ * 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/>.
+ */
+
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.engine.object.annotations.Desc;
+import com.volmit.iris.util.format.Form;
+import com.volmit.iris.util.scheduling.ChronoLatch;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@NoArgsConstructor
+@AllArgsConstructor
+@Data
+@Desc("Represents a count of something per time duration")
+public class IrisRate {
+    @Desc("The amount of things. Leave 0 for infinite (meaning always spawn whenever)")
+    private int amount = 0;
+
+    @Desc("The time interval. Leave blank for infinite 0 (meaning always spawn all the time)")
+    private IrisDuration per = new IrisDuration();
+
+    public String toString()
+    {
+        return Form.f(amount) + "/" + per;
+    }
+
+    public long getInterval()
+    {
+        long t = per.getMilliseconds() / amount;
+        return Math.abs(t <= 0 ? 1 : t);
+    }
+
+    public ChronoLatch toChronoLatch()
+    {
+        return new ChronoLatch(getInterval());
+    }
+}
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisSpawner.java b/src/main/java/com/volmit/iris/engine/object/IrisSpawner.java
index 4dc0b0685..4caf89ec7 100644
--- a/src/main/java/com/volmit/iris/engine/object/IrisSpawner.java
+++ b/src/main/java/com/volmit/iris/engine/object/IrisSpawner.java
@@ -34,6 +34,7 @@ import lombok.EqualsAndHashCode;
 import lombok.NoArgsConstructor;
 import lombok.experimental.Accessors;
 import org.bukkit.Chunk;
+import org.bukkit.World;
 
 @EqualsAndHashCode(callSuper = true)
 @Accessors(chain = true)
@@ -46,23 +47,17 @@ public class IrisSpawner extends IrisRegistrant {
     @Desc("The entity spawns to add")
     private KList<IrisEntitySpawn> spawns = new KList<>();
 
-    private AtomicCache<KList<IrisEntitySpawn>> selection = new AtomicCache<>();
+    @Desc("The block of 24 hour time to contain this spawn in.")
+    private IrisTimeBlock timeBlock = new IrisTimeBlock();
 
-    public boolean spawnInChunk(Engine engine, Chunk c) {
-        if(spawns.isEmpty())
-        {
-            Iris.warn("    Spawner " + getLoadKey() + " has an empty spawn list! (" + getLoadFile().getPath() + ")");
-            return false;
-        }
+    @Desc("The block of 24 hour time to contain this spawn in.")
+    private IrisWeather weather = IrisWeather.ANY;
 
-        return selection.aquire(() -> {
-            KList<IrisEntitySpawn> rarityTypes = new KList<>();
+    @Desc("The maximum rate this spawner can fire")
+    private IrisRate maximumRate = new IrisRate();
 
-            for (IrisEntitySpawn i : spawns) {
-                rarityTypes.addMultiple(i, IRare.get(i));
-            }
-
-            return rarityTypes;
-        }).getRandom(RNG.r).spawn(engine, c, RNG.r);
+    public boolean isValid(World world)
+    {
+        return timeBlock.isWithin(world) && weather.is(world);
     }
 }
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisTimeBlock.java b/src/main/java/com/volmit/iris/engine/object/IrisTimeBlock.java
new file mode 100644
index 000000000..0cb13fe59
--- /dev/null
+++ b/src/main/java/com/volmit/iris/engine/object/IrisTimeBlock.java
@@ -0,0 +1,58 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2021 Arcane Arts (Volmit Software)
+ *
+ * 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/>.
+ */
+
+package com.volmit.iris.engine.object;
+
+import com.volmit.iris.engine.object.annotations.Desc;
+import lombok.Data;
+import org.bukkit.World;
+
+@Data
+@Desc("Represents a time of day (24h time, not 12h am/pm). Set both to the same number for any time. If they are both set to -1, it will always be not allowed.")
+public class IrisTimeBlock {
+    @Desc("The beginning hour. Set both to the same number for any time. If they are both set to -1, it will always be not allowed.")
+    private double startHour = 0;
+
+    @Desc("The ending hour. Set both to the same number for any time. If they are both set to -1, it will always be not allowed.")
+    private double endHour = 0;
+
+    public boolean isWithin(World world)
+    {
+        return isWithin(world.getTime() / 1000D);
+    }
+
+    public boolean isWithin(double hour)
+    {
+        if(startHour == endHour)
+        {
+            if(endHour == -1)
+            {
+                return false;
+            }
+
+            return true;
+        }
+
+        if(startHour > endHour)
+        {
+            return !(hour >= startHour && hour <= endHour);
+        }
+
+        return hour >= startHour && hour <= endHour;
+    }
+}
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisWeather.java b/src/main/java/com/volmit/iris/engine/object/IrisWeather.java
index 85c0b4186..428c02049 100644
--- a/src/main/java/com/volmit/iris/engine/object/IrisWeather.java
+++ b/src/main/java/com/volmit/iris/engine/object/IrisWeather.java
@@ -20,6 +20,7 @@ package com.volmit.iris.engine.object;
 
 import com.volmit.iris.engine.object.annotations.Desc;
 import lombok.Data;
+import org.bukkit.World;
 
 @Desc("Represents a weather type")
 public enum IrisWeather {
@@ -27,5 +28,22 @@ public enum IrisWeather {
     NONE,
 
     @Desc("Represents rain or snow")
-    DOWNFALL
+    DOWNFALL,
+
+    @Desc("Represents rain or snow with thunder")
+    DOWNFALL_WITH_THUNDER,
+
+    @Desc("Any weather")
+    ANY;
+
+    public boolean is(World world)
+    {
+        return switch(this)
+        {
+            case NONE -> world.isClearWeather();
+            case DOWNFALL -> world.hasStorm() && world.isThundering();
+            case DOWNFALL_WITH_THUNDER -> world.hasStorm();
+            case ANY -> true;
+        };
+    }
 }
diff --git a/src/main/java/com/volmit/iris/engine/object/IrisTime.java b/src/main/java/com/volmit/iris/engine/object/engine/IrisEngineData.java
similarity index 68%
rename from src/main/java/com/volmit/iris/engine/object/IrisTime.java
rename to src/main/java/com/volmit/iris/engine/object/engine/IrisEngineData.java
index 0f8ec88be..00bcc39f5 100644
--- a/src/main/java/com/volmit/iris/engine/object/IrisTime.java
+++ b/src/main/java/com/volmit/iris/engine/object/engine/IrisEngineData.java
@@ -16,22 +16,12 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-package com.volmit.iris.engine.object;
+package com.volmit.iris.engine.object.engine;
 
-import com.volmit.iris.engine.object.annotations.Desc;
 import lombok.Data;
 
 @Data
-@Desc("Represents a time of day (24h time, not 12h am/pm)")
-public class IrisTime {
-    @Desc("The beginning hour")
-    private double startHour = 0;
+public class IrisEngineData
+{
 
-    @Desc("The ending hour")
-    private double endHour = 24;
-
-    public boolean isWithin(double hour)
-    {
-
-    }
 }
diff --git a/src/main/java/com/volmit/iris/engine/object/engine/IrisEngineSpawnerCooldown.java b/src/main/java/com/volmit/iris/engine/object/engine/IrisEngineSpawnerCooldown.java
new file mode 100644
index 000000000..7c365d54b
--- /dev/null
+++ b/src/main/java/com/volmit/iris/engine/object/engine/IrisEngineSpawnerCooldown.java
@@ -0,0 +1,42 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2021 Arcane Arts (Volmit Software)
+ *
+ * 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/>.
+ */
+
+package com.volmit.iris.engine.object.engine;
+
+import com.volmit.iris.engine.framework.Engine;
+import com.volmit.iris.engine.object.IrisRate;
+import com.volmit.iris.util.math.M;
+import lombok.Data;
+
+@Data
+public class IrisEngineSpawnerCooldown
+{
+    private long lastSpawn;
+    private String spawner;
+
+    public void spawn(Engine engine)
+    {
+        lastSpawn = M.ms();
+        engine.saveProperties();
+    }
+
+    public boolean canSpawn(IrisRate s)
+    {
+        return M.ms() - lastSpawn > s.getInterval();
+    }
+}