diff --git a/frontend/src/components/Deck.vue b/frontend/src/components/Deck.vue
index 3fbed89..ce2ff7b 100644
--- a/frontend/src/components/Deck.vue
+++ b/frontend/src/components/Deck.vue
@@ -98,7 +98,7 @@ export default {
       lines.push(this.deck.note)
       lines.push('')
 
-      // list forwards
+      // list each deck part
       this.deck_parts.forEach(part => {
         lines.push(`${part.heading} (${part.count}):`)
 
diff --git a/frontend/src/components/forms/DeckEditor.vue b/frontend/src/components/forms/DeckEditor.vue
index c4a9c92..77dd323 100644
--- a/frontend/src/components/forms/DeckEditor.vue
+++ b/frontend/src/components/forms/DeckEditor.vue
@@ -3,12 +3,15 @@
     <v-alert v-model="deck.count !== 50" type="warning">
       {{ deck.count }} cards detected! (Decks should have 50)
     </v-alert>
+    <v-alert v-model="deck.maximum > 3" type="warning">
+      Card with {{ deck.maximum }} copies detected! (Cards should not have more than 3 copies)
+    </v-alert>
 
     <v-textarea
       ref="textarea"
       label="Edit Deck"
       :value="deck_list"
-      rows="40"
+      rows="35"
       hint="Change card counts and/or serial numbers. Names will be updated automatically."
       style="font-family: monospace"
     >
@@ -31,7 +34,8 @@ export default {
 
   data: () => ({
     deck: {
-      count: 50
+      count: 50,
+      maximum: 0
     }
   }),
 
@@ -47,6 +51,7 @@ export default {
       // select all lines containing card serial numbers
       let cardLinesRE = /^.*\b\d-\d{3}[A-Z]?\b.*$/gm
       let cardLines = deck_string.match(cardLinesRE)
+      let cardCounts = {}
 
       cardLines.forEach(cardLine => {
         // extract serial (guaranteed to be in here!)
@@ -79,12 +84,21 @@ export default {
           }
         }
 
-        // push card data into deck
+        // count copies
+        if (!cardCounts[serial]) {
+          cardCounts[serial] = 0
+        }
+        cardCounts[serial] += count
+
+        retval.count += count
+      })
+
+      // push card data into deck
+      Object.keys(cardCounts).forEach(serial => {
         retval.cards.push({
           serial: serial,
-          count: count
+          count: cardCounts[serial]
         })
-        retval.count += count
       })
 
       // strip out lines with serial numbers
@@ -120,7 +134,16 @@ export default {
 
     check() {
       let new_deck = this.parse_deck(this.$refs.textarea.lazyValue)
+
+      // count number of cards
       this.deck.count = new_deck.count
+
+      // find most frequent card
+      this.deck.maximum = 0
+      new_deck.cards.forEach(card => {
+        if(card.count > this.deck.maximum)
+          this.deck.maximum = card.count
+      })
     }
   }
 }
diff --git a/frontend/src/views/UserCP.vue b/frontend/src/views/UserCP.vue
index 1a1e4c4..3391c38 100644
--- a/frontend/src/views/UserCP.vue
+++ b/frontend/src/views/UserCP.vue
@@ -77,97 +77,6 @@ export default {
           }
         })
     }
-  },
-
-  mounted() {
-    let fileContent = `--Generated By FF Decks (www.ffdecks.com)--
-Deck Name: Ashe turbo
-Created by: hawks1997
-
-
-Forward(26):
-3 Garland (6-002)
-3 Rain (8-134)
-3 Garnet (3-129)
-2 Zidane (8-115)
-3 Ashe (2-121)
-3 Basch (2-014)
-3 Steiner (4-129)
-3 Vivi (3-017)
-3 Cecil (2-129)
-
-Summon(8):
-2 Cuchulainn, the Impure (2-133)
-2 Bahamut (4-016)
-1 Phoenix (5-019)
-3 Leviathan (6-125)
-
-Backup(16):
-2 Sage (2-005)
-2 Vermilion Bird l'Cie Caetuna (6-010)
-2 Yotsuyu (8-020)
-2 Rasler (5-166)
-2 Red Mage (1-003)
-3 Hilda (6-122)
-3 Astrologian (2-130)
-
-Monster(0):`
-
-    // select the line containing 'deck name:'
-    // and its successor
-    let metaRE = /^deck name: (.+)$[\s]*?^(.+)$/im
-    let metaData = metaRE.exec(fileContent)
-
-    // extract matches
-    let deckData = {
-      name: metaData[1],
-      note: metaData[2],
-      cards: []
-    }
-
-    // select all lines containing card serial numbers
-    let cardLinesRE = /^.*\b\d-\d{3}[A-Z]?\b.*$/gm
-    let cardLines = fileContent.match(cardLinesRE)
-
-    cardLines.forEach(cardLine => {
-      // extract serial (guaranteed to be in here!)
-      let serialRE = /\b(\d-\d{3})[A-Z]?\b/i
-      let serial = serialRE.exec(cardLine)[1]
-
-      // strip out serial number
-      cardLine = cardLine.replace(serialRE, '')
-
-      let countREs = [
-        // prioritize a count with "times" symbol *, x, ×
-        /\b([1-3])(?:[*×]|[x]\b)/,
-        /(?:[*×]|\b[x])([1-3])\b/,
-        // next priority: with whitespace
-        /\s+([1-3])\s+/,
-        /\s+([1-3])\b/,
-        /\b([1-3])\s+/,
-        // least priority: any single digit
-        /\b([1-3])\b/
-      ]
-
-      // fallback value
-      let count = '0'
-      for (let i = 0; i < countREs.length; i++) {
-        let data = countREs[i].exec(cardLine)
-
-        if (data) {
-          count = data[1]
-          break
-        }
-      }
-
-      // push card data into deck
-      deckData.cards.push({
-        serial: serial,
-        count: count
-      })
-    })
-
-    console.log(deckData)
   }
 }
 </script>