diff --git a/module/actor-sheet.js b/module/actor-sheet.js
index 1436aaf..eb03e6d 100644
--- a/module/actor-sheet.js
+++ b/module/actor-sheet.js
@@ -26,6 +26,8 @@ export class SoSActorSheet extends ActorSheet {
     let data = super.getData();
     
     data.data.edgecard = this.actor.getEdgesCard();
+    data.data.deckSize = this.actor.getDeckSize();
+
     data.data.skills   = this.actor.data.items.filter( item => item.type == 'skill').sort( (a, b) =>  { 
           if ( a.name > b.name ) return 1;
           return -1;
diff --git a/module/actor.js b/module/actor.js
index a39b582..64575c5 100644
--- a/module/actor.js
+++ b/module/actor.js
@@ -59,6 +59,12 @@ export class SoSActor extends Actor {
     }
     this.controlScores();
   }
+
+  /* -------------------------------------------- */
+  getDeckSize() {
+    return this.cardDeck.getDeckSize();
+  }
+
   /* -------------------------------------------- */
   getEdgesCard( ) {
     let edgesCard = duplicate(this.cardDeck.data.cardEdge);
diff --git a/module/sos-card-deck.js b/module/sos-card-deck.js
index 80ebbfd..8e0da25 100644
--- a/module/sos-card-deck.js
+++ b/module/sos-card-deck.js
@@ -94,6 +94,11 @@ export class SoSCardDeck  {
     }
   }
 
+  /* -------------------------------------------- */
+  getDeckSize() {
+    return this.data.deck.length;    
+  }
+
   /* -------------------------------------------- */
   getCardSuit( cardName ) {
     if ( cardName[0] == 'c') return 'club';
diff --git a/module/sos-combat.js b/module/sos-combat.js
index 3b4e0b1..0f4686a 100644
--- a/module/sos-combat.js
+++ b/module/sos-combat.js
@@ -139,6 +139,18 @@ export class SoSCombat extends Combat {
     return 0;
   }
 
+  /* -------------------------------------------- */
+  decreaseAPFromActor( actorId ) {
+    for( let combatant of this.combatants) {
+      //console.log(combatant);
+      if ( combatant.actor.data._id == actorId ) {
+        let phase = this.phaseSetup[combatant._id]; 
+        phase.remainingAP -= 1;
+        if ( phase.remainingAP < 0 ) phase.remainingAP = 0;
+      }
+    }
+  }
+  
   /* -------------------------------------------- */
   async setupActorActions(actionConf) {
     console.log("Setting combat for phase : ", actionConf);
diff --git a/module/sos-utility.js b/module/sos-utility.js
index f3870be..cdad57b 100644
--- a/module/sos-utility.js
+++ b/module/sos-utility.js
@@ -35,19 +35,21 @@ export class SoSUtility {
 
   /* -------------------------------------------- */
   onSocketMesssage( msg ) {
+    if( !game.user.isGM ) return; // Only GM
+
     if (msg.name == 'msg_declare_actions' ) {
-      if (game.user.isGM) { 
-        let combat = game.combats.get( msg.data.combatId); // Get the associated  combat
-        combat.setupActorActions( msg.data );
-      }
+      let combat = game.combats.get( msg.data.combatId); // Get the associated  combat
+      combat.setupActorActions( msg.data );
     } else if (msg.name == 'msg_close_action') {
-      if (game.user.isGM) { 
-        game.combat.closeAction( msg.data.uniqId );
-      }
+      game.combat.closeAction( msg.data.uniqId );
     } else if (msg.name == 'msg_request_defense') {
-      if (game.user.isGM) { 
-        SoSUtility.applyDamage( msg.data );
-      }
+      SoSUtility.applyDamage( msg.data );
+    } else if (msg.name == 'msg_reaction_cover') {
+      SoSUtility.reactionCover( msg.data.uniqId );
+    } else if (msg.name == 'msg_reaction_melee') {
+      SoSUtility.reactionMelee( msg.data.uniqId );
+    } else if (msg.name == 'msg_reaction_hit') {
+      SoSUtility.reactionHit( msg.data.uniqId );
     }
   }
 
@@ -119,7 +121,7 @@ export class SoSUtility {
     if ( game.user.isGM ) {
       game.combat.closeAction( uniqId );
     } else {
-      game.socket.emit("system.foundryvtt-reve-de-dragon", {
+      game.socket.emit("system.foundryvtt-shadows-over-sol", {
           name: "msg_close_action", data: { uniqId: uniqId}  } );
     }
   }
@@ -132,6 +134,32 @@ export class SoSUtility {
     html.on("click", '#button-end-action', event => {
       SoSUtility.closeAction( event );
     });    
+
+    html.on("click", '#button-reaction-cover', event => {
+      let uniqId = event.currentTarget.attributes['data-uniq-id'].value;
+      if ( game.user.isGM ) {
+        SoSUtility.reactionCover( uniqId );
+      } else {
+        game.socket.emit("system.foundryvtt-shadows-over-sol", { name: "msg_reaction_cover", data: { uniqId: uniqId}  } );
+      }
+    });    
+
+    html.on("click", '#button-reaction-melee', event => {
+      let uniqId = event.currentTarget.attributes['data-uniq-id'].value;
+      if ( game.user.isGM ) {
+        SoSUtility.reactionMelee( uniqId );
+      } else {
+        game.socket.emit("system.foundryvtt-shadows-over-sol", { name: "msg_reaction_melee", data: { uniqId: uniqId}  } );
+      }
+    });    
+    html.on("click", '#button-reaction-hit', event => {
+      let uniqId = event.currentTarget.attributes['data-uniq-id'].value;
+      if ( game.user.isGM ) {
+        SoSUtility.reactionHit( uniqId );
+      } else {
+        game.socket.emit("system.foundryvtt-shadows-over-sol", { name: "msg_reaction_hit", data: { uniqId: uniqId}  } );
+      }
+    });        
   }
 
   /* -------------------------------------------- */
@@ -144,14 +172,24 @@ export class SoSUtility {
     return undefined;
   }
 
-    /* -------------------------------------------- */
-    static increaseConsequenceSeverity( severity ) {
-      if ( severity == 'none') return 'light';
-      if ( severity == 'light') return 'moderate';
-      if ( severity == 'moderate') return 'severe';      
-      if ( severity == 'severe') return 'critical';
-      return 'critical';
-    }
+  /* -------------------------------------------- */
+  static increaseConsequenceSeverity( severity ) {
+    if ( severity == 'none') return 'light';
+    if ( severity == 'light') return 'moderate';
+    if ( severity == 'moderate') return 'severe';      
+    if ( severity == 'severe') return 'critical';
+    return 'critical';
+  }
+
+  /* -------------------------------------------- */
+  static getConsequenceSeverityLevel( severity) {
+    if ( severity == 'none')     return 0;
+    if ( severity == 'light')    return 1;
+    if ( severity == 'moderate') return 2;
+    if ( severity == 'severe')   return 3;
+    if ( severity == 'critical') return 4;
+    return 0;
+  }
   
   /* -------------------------------------------- */
   static increaseSeverity( severity ) {
@@ -180,6 +218,17 @@ export class SoSUtility {
 
   /* -------------------------------------------- */
   static async applyDamage( flipData ) {
+    if (!this.registry) this.registry = {};
+
+    if ( flipData.isReaction) {
+      flipData.magnitude = flipData.finalScore - flipData.tn; // Update magnitude
+      if ( flipData.magnitude < 0 ) {
+        let html = await renderTemplate('systems/foundryvtt-shadows-over-sol/templates/chat-reaction-result.html', flipData );
+        ChatMessage.create( { content: html });    
+        return;
+      }
+    }
+
     let dr = flipData.target.actor.data.data.scores.dr.value;
     let shock = flipData.target.actor.data.data.scores.shock.value;
     let defenseCritical = flipData.target.actor.data.data.scores.defense.critical;
@@ -228,22 +277,50 @@ export class SoSUtility {
     flipData.coverConsequence = defender.data.items.find( item => item.type == 'consequence' && item.name == 'Cover');
     flipData.APavailable = game.combat.getAPFromActor( defender.data._id );
     console.log("FLIPDATE : ", flipData);
-    if ( flipData.APavailable > 0) {
+    if ( !flipData.isReaction && flipData.APavailable > 0) {
       if ( (flipData.weapon.data.category == 'melee' ) || ( (flipData.weapon.data.category == 'laser' || flipData.weapon.data.category == 'ballistic') && 
         flipData.coverConsequence.data.severity != 'none') )  {
-        flipData.coverSeverityLevel = this.getSeverityLevel( flipData.coverConsequence.data.severity ) * 2;
+        flipData.coverSeverityLevel = this.getConsequenceSeverityLevel( flipData.coverConsequence.data.severity ) * 2;
         flipData.coverSeverityFlag  = (flipData.coverSeverityLevel > 0);
         flipData.isMelee = (flipData.weapon.data.category == 'melee' );
         let melee = defender.data.items.find( item => item.type == 'skill' && item.name == 'Melee');
         flipData.defenderMelee = melee.data.value;
+        flipData.uniqId = randomID(16);
+        this.registry[flipData.uniqId] = flipData;
         let html = await renderTemplate('systems/foundryvtt-shadows-over-sol/templates/chat-damage-request-dodge.html', flipData );
         ChatMessage.create( { content: html, whisper: [ChatMessage.getWhisperRecipients(flipData.target.actor.name), ChatMessage.getWhisperRecipients("GM") ] } );
         return; // Wait message response
       }
     }
+    flipData.isReaction = false;
     this.takeWounds( flipData);
   }
 
+   /* -------------------------------------------- */
+   static reactionCover( uniqId) {
+    let flipData = this.registry[uniqId];
+    flipData.tn += flipData.coverSeverityLevel;
+    flipData.isReaction = true;
+    game.combat.decreaseAPFromActor( flipData.target.actor._id );
+    SoSUtility.applyDamage( flipData);
+   }
+
+  /* -------------------------------------------- */
+  static reactionMelee( uniqId) {
+    let flipData = this.registry[uniqId];
+    flipData.tn += flipData.defenderMelee;
+    flipData.isReaction = true;
+    game.combat.decreaseAPFromActor( flipData.target.actor._id );
+    SoSUtility.applyDamage( flipData);
+  }
+
+  /* -------------------------------------------- */
+  static reactionHit( uniqId) {
+    let flipData = this.registry[uniqId];
+    flipData.isReaction = true;
+    SoSUtility.takeWounds( flipData);
+  }
+  
    /* -------------------------------------------- */
    static takeWounds( flipData ) {
     let defender = game.actors.get( flipData.target.actor._id);
diff --git a/styles/simple.css b/styles/simple.css
index be4c310..6e2d732 100644
--- a/styles/simple.css
+++ b/styles/simple.css
@@ -1032,7 +1032,7 @@ ul, li {
   cursor: pointer;
   color: #ffffff;
   font-family: Neuropol;
-  font-size: 14px;
+  font-size: 0.9rem;
   padding: 4px 12px 0px 12px;
   text-decoration: none;
   text-shadow: 0px 1px 0px #4d3534;
diff --git a/templates/actor-sheet.html b/templates/actor-sheet.html
index 0bdf159..7d414a7 100644
--- a/templates/actor-sheet.html
+++ b/templates/actor-sheet.html
@@ -73,12 +73,13 @@
           
           <div class="flexrow">
             <span class="flexcol">
-              <h3 class="edge-name">Edge cards : </h3>
+              <h3 class="edge-name">Current deck size : {{data.deckSize}} cards</h3>
               <span class="edge-name"><a class="reset-deck-full">Reset full deck and edges</a></span>
               <span class="edge-name"><a class="draw-new-edge">Draw a new Edge card</a></span>
               <span class="edge-name"><a class="reset-deck">Reset deck only (ie after a Joker)</a></span>
             </span>
             <span class="edge-name">
+              <h3 class="edge-name">Edge cards : </h3>
               {{#each data.edgecard as |card key|}}
               <img class="card-img" src="{{card.path}}" data-edit="img" title="{{card.cardName}}" />
               {{/each}}
diff --git a/templates/chat-damage-request-dodge.html b/templates/chat-damage-request-dodge.html
index 0fa1c84..28bb914 100644
--- a/templates/chat-damage-request-dodge.html
+++ b/templates/chat-damage-request-dodge.html
@@ -1,10 +1,13 @@
-<h4>{{target.actor.name}} has {{remainingAP}} AP and can react to the attack from {{actor.name}} !</h4>
+<h4>{{target.actor.name}} has {{APavailable}} AP and can react to the attack from {{actor.name}} !</h4>
   <div class="flexcol">
     {{#if coverSeverityFlag}}
-    <label>Add cover consequence bonus * 2 to your defense : {{coverSeverityLevel}}</label>
+    <a class='chat-card-button' id='button-reaction-cover' data-uniq-id='{{uniqId}}' data-actor-id='{{target.actor._id}}'>
+      Add cover consequence bonus x 2 to your defense : {{coverSeverityLevel}}</a>`
     {{/if}}
     {{#if isMelee}}
-    <label>Add Melee level to your defense : {{defenderMelee}}</label>
+    <a class='chat-card-button' id='button-reaction-melee' data-uniq-id='{{uniqId}}' data-actor-id='{{target.actor._id}}'>
+      Add Melee level to your defense : {{defenderMelee}}</a>`
     {{/if}}
-    <label>Do not dodge and get the hit ! </label>
+    <a class='chat-card-button' id='button-reaction-hit' data-uniq-id='{{uniqId}}' data-actor-id='{{target.actor._id}}'>
+      Do not dodge and get the hit !</a>`
   </div>
diff --git a/templates/chat-reaction-result.html b/templates/chat-reaction-result.html
new file mode 100644
index 0000000..4f55bc2
--- /dev/null
+++ b/templates/chat-reaction-result.html
@@ -0,0 +1,4 @@
+<h4>{{target.actor.name}} reacted and has avoided damages !</h4>
+  <div class="flexcol">
+    <label>Score : {{finalScore}} - Target defense : {{tn}} / {{targetCritical}}</label>
+  </div>