diff --git a/data/magic.mse-game/keywords_en b/data/magic.mse-game/keywords_en
index cacba4c1d..38bc6a200 100644
--- a/data/magic.mse-game/keywords_en
+++ b/data/magic.mse-game/keywords_en
@@ -2088,3 +2088,15 @@ keyword:
 	match: Waterbend <atom-param>mana</atom-param>
 	mode: action
 	reminder: While paying a waterbend cost, you can tap your artifacts and creatures to help. Each one pays for [1].
+
+#TMNT
+keyword:
+	keyword: Sneak
+	match: Sneak <atom-param>cost</atom-param>
+	mode: expert
+	reminder: You may cast this spell for {param1} if you also return an unblocked attacker you control to hand during the declare blockers step.
+keyword:
+	keyword: Mutagen tokens
+	match: Mutagen toke<atom-param>*s</atom-param>
+	mode: expert
+	reminder: {handle_merged_rt(if param1.value == "ns" then "They’re artifacts" else "It’s an artifact", moved:"A Mutagen token is an artifact")} with "[1], [T], Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery."