diff --git a/Assets/Battle/BattleController.cs b/Assets/Battle/BattleController.cs
index a7c461f..e6c2848 100644
--- a/Assets/Battle/BattleController.cs
+++ b/Assets/Battle/BattleController.cs
@@ -30,8 +30,11 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
     private HeroInfoUI[] monsterUIs;
 
     private bool heroTurn;
+    private bool heroPassedTurn;
     private int maxEnergy;
     private int energy;
+    private int maxMEnergy;
+    private int mEnergy;
 
     void Awake() {
         this.heroCardDatabase = new HeroCardDatabase();
@@ -113,7 +116,7 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
     // Start is called before the first frame update
     void Start()
     {
-        StartHeroTurn();
+        StartCoroutine(RunBattleRounds());
     }
 
     // Update is called once per frame
@@ -121,37 +124,66 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
     {
     }
 
-    private void StartHeroTurn() {
+    private IEnumerator RunBattleRounds() {
+        while (true) {
+            yield return RunBattleRound();
+        }
+    }
+
+    private IEnumerator RunBattleRound() {
         this.heroTurn = true;
         
         this.damageTriggers.RemoveAll(t => t.Expiration == TriggerExpiration.StartOfNextHeroTurn);
 
         this.energy = this.maxEnergy;
-        foreach (BattleHero hero in this.heroes) {
-            hero.ResetBlock();
-        }
+        this.mEnergy = this.maxMEnergy;
         this.heroDeck.DrawHand();
-        this.battlePlayerControls.NotifyHandPileChanged();
-        
+        this.monsterDeck.DrawHand();
+
+        yield return RunHeroTurn();
+
+        this.heroTurn = false;
+        yield return RunMonsterTurn();
+    }
+
+    private IEnumerator RunHeroTurn() {
+        // Start of hero turn
         if (this.maxEnergy < 9) {
             this.maxEnergy++;
             this.energy++;
         }
+        foreach (BattleHero hero in this.heroes) {
+            hero.ResetBlock();
+        }
+
+        // Heroes act until they pas
+        while (!this.heroPassedTurn) {
+            yield return null;
+        }
+        this.heroPassedTurn = false;
+
+        // End of hero turn
+        this.heroDeck.DiscardHand();
     }
 
-    private void StartEnemyTurn() {
-        this.heroTurn = false;
-
-        this.heroDeck.DiscardHand();
-
+    private IEnumerator RunMonsterTurn() {
+        // Start of monster turn
+        if (this.maxMEnergy < 9) {
+            this.maxMEnergy++;
+            this.mEnergy++;
+        }
         foreach (BattleMonster monster in this.monsters) {
             monster.ResetBlock();
         }
 
-        MonsterCard card = this.monsterCardDatabase.CreateCard((int) MCardId.VampireFangs, this.monsters[0]);
-        StartCoroutine(UseMonsterCard(card));
-
-        StartHeroTurn();
+        // Start of monster turn
+        List<MonsterCard> monsterHand = this.monsterDeck.GetHandPile();
+        for (int i = 0; i < monsterHand.Count; i++) {
+            MonsterCard monsterCard = monsterHand[i];
+            if (CanUseMonsterCard(monsterCard)) {
+                yield return UseMonsterCard(monsterCard);
+            }
+        }
     }
 
     public void NotifyHeroCardUsed(HeroCard card) {
@@ -163,7 +195,7 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
 
     public IEnumerator UseHeroCard(HeroCard card) {
         yield return card.Use(this, battlePlayerControls);
-        PayCardCost(card);
+        PayHeroCardCost(card);
         this.heroDeck.RemoveCardFromHand(card);
         if (card.IsPermanent()) {
             this.playArea.AddPlayedHeroPermanent(card);
@@ -174,12 +206,18 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
 
     public IEnumerator UseMonsterCard(MonsterCard card) {
         yield return card.Use(this, this);
-        // TODO: Manage monster deck.
+        PayMonsterCardCost(card);
+        this.monsterDeck.RemoveCardFromHand(card);
+        if (card.IsPermanent()) {
+            this.playArea.AddPlayedMonsterPermanent(card);
+        } else {
+            this.monsterDeck.MoveCardToDiscard(card);
+        }
     }
 
     public void NotifyHeroTurnPassed() {
         if (this.heroTurn) {
-            StartEnemyTurn();
+            this.heroPassedTurn = true;
         }
     }
 
@@ -187,10 +225,18 @@ public class BattleController : MonoBehaviour, IBattleEffectApplier, IBattleEffe
         return this.heroTurn && this.energy >= card.GetCost();
     }
 
-    private void PayCardCost(HeroCard card) {
+    public bool CanUseMonsterCard(MonsterCard card) {
+        return !this.heroTurn && this.mEnergy >= card.GetCost();
+    }
+
+    private void PayHeroCardCost(HeroCard card) {
         this.energy -= card.GetCost();
     }
 
+    private void PayMonsterCardCost(MonsterCard card) {
+        this.mEnergy -= card.GetCost();
+    }
+
     public int GetEnergy() {
         return this.energy;
     }
diff --git a/Assets/Battle/BattlePlayerControls.cs b/Assets/Battle/BattlePlayerControls.cs
index 444d5c0..b8f82e6 100644
--- a/Assets/Battle/BattlePlayerControls.cs
+++ b/Assets/Battle/BattlePlayerControls.cs
@@ -6,6 +6,8 @@ using UnityEngine.UI;
 
 public class BattlePlayerControls : MonoBehaviour
 {
+    // TODO: Draw enemy permanents
+    
     public BattleController battleController;
     public GameObject uiCanvas;
     public GameObject cardPrefab;
diff --git a/Assets/Battle/PlayArea.cs b/Assets/Battle/PlayArea.cs
index aa3eb0a..38db77a 100644
--- a/Assets/Battle/PlayArea.cs
+++ b/Assets/Battle/PlayArea.cs
@@ -9,9 +9,11 @@ public class PlayArea
     public event PlayAreaChangedAction OnPlayAreaChanged;
 
     private List<BaseCard> heroPermanents;
+    private List<BaseCard> monsterPermanents;
 
     public PlayArea() {
         this.heroPermanents = new List<BaseCard>();
+        this.monsterPermanents = new List<BaseCard>();
     }
 
     public List<BaseCard> GetHeroPermanents() {
@@ -28,6 +30,16 @@ public class PlayArea
         TriggerPlayAreaChanged();
     }
 
+    public void AddPlayedMonsterPermanent(BaseCard permanent) {
+        this.monsterPermanents.Add(permanent);
+        TriggerPlayAreaChanged();
+    }
+
+    public void RemoveMonsterPermanent(BaseCard permanent) {
+        this.monsterPermanents.Remove(permanent);
+        TriggerPlayAreaChanged();
+    }
+
     private void TriggerPlayAreaChanged() {
         if (OnPlayAreaChanged != null) OnPlayAreaChanged();
     }
diff --git a/TODO.txt b/TODO.txt
index a953cd0..889c22d 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -1,3 +1,2 @@
-- Control flow of battle with state machine or coroutines
 - Make battle end
 - Do not allow dead heroes to act
\ No newline at end of file