diff --git a/.gitattributes b/.gitattributes
index 8e14aba5047..3d04a394357 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -184,6 +184,7 @@ res/quest/decks/Magnum[!!-~]2.dck -text
 res/quest/decks/Magnum[!!-~]3.dck -text
 res/quest/decks/Marge[!!-~]Simpson[!!-~]3.dck -text
 res/quest/decks/Morpheus[!!-~]3.dck -text
+res/quest/decks/Mr[!!-~]Slate[!!-~]3.dck -text
 res/quest/decks/Napoleon[!!-~]3.dck -text
 res/quest/decks/Ned[!!-~]Flanders[!!-~]1.dck -text
 res/quest/decks/Ned[!!-~]Flanders[!!-~]2.dck -text
diff --git a/res/quest/decks/Mr Slate 3.dck b/res/quest/decks/Mr Slate 3.dck
new file mode 100644
index 00000000000..ae26af57c4b
--- /dev/null
+++ b/res/quest/decks/Mr Slate 3.dck	
@@ -0,0 +1,23 @@
+Mr Slate 3
+[general]
+constructed
+[main]
+4 Spreading Seas
+3 Cold-Eyed Selkie
+4 Kabira Crossroads
+1 Mox Sapphire
+4 Lord of Atlantis
+3 Plains
+2 Enclave Elite
+6 Island
+4 Merfolk Sovereign
+4 Avian Changeling
+4 Glacial Fortress
+3 Inkfathom Divers
+4 Echoing Truth
+2 Merrow Harbinger
+1 Mox Pearl
+3 Deeptread Merrow
+4 Tundra
+4 Counterspell
+[sideboard]
diff --git a/res/quest/hard.txt b/res/quest/hard.txt
index c02e05ea74c..7c8ac139a05 100644
--- a/res/quest/hard.txt
+++ b/res/quest/hard.txt
@@ -46,7 +46,8 @@ Luke Skywalker 3
 Maggie Simpson 3
 Magneto 3
 Magnum 3
-Marge Simpson 3
+Marge Simpson 3
+Mr Slate 3
 Morpheus 3
 Napoleon 3
 Ned Flanders 3
diff --git a/src/forge/Gui_Quest.java b/src/forge/Gui_Quest.java
index 42742abc2f3..898e10aeb43 100644
--- a/src/forge/Gui_Quest.java
+++ b/src/forge/Gui_Quest.java
@@ -527,6 +527,8 @@ public class Gui_Quest extends JFrame implements NewConstants{
         sb.append("\r\n");
         sb.append("Morpheus 3		hard	Elves with Overrun, Gaea's Anthem, Imperious Perfect and other pumps");
         sb.append("\r\n");
+        sb.append("Mr Slate 3		hard	Corwin72's Don't Go in the Water deck with mods, Merfolk and Merfolk pumps");
+        sb.append("\r\n");
         sb.append("Napoleon 3		hard	Walls, Rolling Stones and Doran, the Siege Tower");
         sb.append("\r\n");
         sb.append("Ned Flanders 1		easy	Sloth's reanimator deck, a few large creatures and some spells");