diff --git a/engine/core/card.js b/engine/core/card.js
new file mode 100644
index 0000000..e844232
--- /dev/null
+++ b/engine/core/card.js
@@ -0,0 +1,12 @@
+import Effect from './effect.js';
+
+class Card {
+    constructor() {
+        /** @type {string} */
+        this.name;
+        /** @type {string} */
+        this.description;
+        /** @type {Effect} */
+        this.effect;
+    }
+}
\ No newline at end of file
diff --git a/engine/core/effect.js b/engine/core/effect.js
new file mode 100644
index 0000000..6daf046
--- /dev/null
+++ b/engine/core/effect.js
@@ -0,0 +1,3 @@
+class Effect {
+    constructor() {}
+}
\ No newline at end of file
diff --git a/engine/core/game_state.js b/engine/core/game_state.js
index 2f7b404..50c77b4 100644
--- a/engine/core/game_state.js
+++ b/engine/core/game_state.js
@@ -1,7 +1,13 @@
+import Board from './board.js';
+import Team from './team.js';
+import Stack from './stack.js';
+
 class GameState {
     constructor() {
         /** @type {Board} */
         this.board = new Board();
+        /** @type {Stack} */
+        this.stack = new Stack();
         /** @type {Team} */
         this.whiteTeam = new Team("white");
         /** @type {Team} */
diff --git a/engine/core/hand.js b/engine/core/hand.js
new file mode 100644
index 0000000..8d6fe7d
--- /dev/null
+++ b/engine/core/hand.js
@@ -0,0 +1,29 @@
+import Card from './card.js';
+
+class Hand {
+    constructor() {
+        /** @type {Array(Card)} */
+        this.cards = [];
+    }
+
+    /**
+     * @param {Card} card 
+     */
+    pushCard(card) {
+        this.cards.push(card);
+    }
+
+    /**
+     * @param {number} index
+     * @returns {Card|null}
+     */
+    popCard(index) {
+        if (index < 0 || index >= this.cards.length) {
+            return null;
+        } else {
+            let c = this.cards.at(index);
+            this.cards.splice(index, 1);
+            return c;
+        }
+    }
+}
\ No newline at end of file
diff --git a/engine/core/stack.js b/engine/core/stack.js
new file mode 100644
index 0000000..ef10304
--- /dev/null
+++ b/engine/core/stack.js
@@ -0,0 +1,48 @@
+import Card from './card.js';
+
+class Stack {
+    constructor() {
+        /** @type {Array(Card)} */
+        this.stack;
+        /** @type {Array{Card}} */
+        this.discard;
+    }
+
+    /**
+     * @returns {Card|null}
+     */
+    drawACard() {
+        if (this.stack.length > 0) {
+            return this.stack.pop();
+        } else {
+            if (this.discard.length == 0) {
+                return null;
+            }
+            while (this.discard.length > 0) {
+                let randomIndex = Math.floor(Math.random() * this.discard.length);
+                this.stack.push(this.discard.at(randomIndex));
+                this.stack.splice(randomIndex, 1);
+            }
+            return this.stack.pop();
+        }
+    }
+
+    /**
+     * 
+     * @param {card} card 
+     */
+    discardACard(card) {
+        this.discard.push(card);
+    }
+
+    /**
+     * @description Shuffle the stack
+     */
+    shuffle() {
+        let index = this.stack.length - 1;
+        while (index > 0) {
+            let randomIndex = Math.floor(Math.random() * index);
+            [this.stack[index], this.stack[randomIndex]] = [this.stack[randomIndex], this.stack[index]];
+        }
+    }
+}
\ No newline at end of file
diff --git a/engine/core/team.js b/engine/core/team.js
index e246adf..a69d3e4 100644
--- a/engine/core/team.js
+++ b/engine/core/team.js
@@ -1,5 +1,6 @@
 import Piece from './piece.js';
 import PieceColor from './piece.js';
+import Hand from './hand.js';
 
 class Team {
     /**
@@ -11,6 +12,10 @@ class Team {
         this.color = color;
         /** @type {Piece} */
         this.king = king;
+        /** @type {Hand} */
+        this.hand = new this.hand();
+        /** @type {boolean} */
+        this.hasMadeAction = false;
     }
 
     /**