diff --git a/constructors.js b/constructors.js
index d0bf11a..03cdba1 100644
--- a/constructors.js
+++ b/constructors.js
@@ -10,6 +10,11 @@
  * @property {string} description
  * @method   printDetails
  */
+ function Spell (name, cost, description) {
+  this.name = name;
+  this.cost = cost;
+  this.description = description;
+ }
 
   /**
    * Returns a string of all of the spell's details.
@@ -18,6 +23,10 @@
    * @name getDetails
    * @return {string} details containing all of the spells information.
    */
+  Spell.prototype.getDetails = function(){
+    var string = this.name + ' ' + this.cost + ' ' + this.description;
+    return string;
+  };
 
 /**
  * A spell that deals damage.
@@ -43,6 +52,14 @@
  * @property {number} damage
  * @property {string} description
  */
+ function DamageSpell (name, cost, damage, description){
+  Spell.call(this, name, cost, description);
+  this.damage = damage;
+  return this.damage;
+
+ }
+ DamageSpell.prototype = Object.create(Spell.prototype);
+
 
 /**
  * Now that you've created some spells, let's create
@@ -60,6 +77,12 @@
  * @method  spendMana
  * @method  invoke
  */
+function Spellcaster(name, health, mana){
+  this.name = name;
+  this.health = health;
+  this.mana = mana;
+  this.isAlive = true;
+}
 
   /**
    * @method inflictDamage
@@ -71,6 +94,13 @@
    *
    * @param  {number} damage  Amount of damage to deal to the spellcaster
    */
+  Spellcaster.prototype.inflictDamage = function (damage){
+    this.health = this.health - damage;
+    if (this.health === 0 || this.health < 0){
+      this.health = 0;
+      this.isAlive = false;
+    }
+  };
 
   /**
    * @method spendMana
@@ -81,6 +111,14 @@
    * @param  {number} cost      The amount of mana to spend.
    * @return {boolean} success  Whether mana was successfully spent.
    */
+  Spellcaster.prototype.spendMana = function (cost){
+    if (this.mana > cost){
+      this.mana = this.mana - cost;
+      return true;
+    }else if (this.mana < cost){
+      return false;
+    }
+  };
 
   /**
    * @method invoke
@@ -108,3 +146,11 @@
    * @param  {Spellcaster} target         The spell target to be inflicted.
    * @return {boolean}                    Whether the spell was successfully cast.
    */
+  Spellcaster.prototype.invoke = function (spell, target){
+    if (!(spell instanceof Spell)){
+      return true;
+    }else{
+      return false;
+        }if(spell instanceof DamageSpell === true){
+    }
+  };