diff --git a/config/formats.js b/config/formats.js
index 8166eb2066..d28bd62e98 100644
--- a/config/formats.js
+++ b/config/formats.js
@@ -574,7 +574,7 @@ exports.Formats = [
 		name: "Balanced Hackmons",
 		section: "Other Metagames",
 
-		ruleset: ['Pokemon', 'Ability Clause', 'OHKO Clause', 'Evasion Moves Clause', 'Team Preview', 'HP Percentage Mod'],
+		ruleset: ['Pokemon', 'Ability Clause', '-ate Clause', 'OHKO Clause', 'Evasion Moves Clause', 'Team Preview', 'HP Percentage Mod'],
 		banlist: ['Arena Trap', 'Huge Power', 'Parental Bond', 'Pure Power', 'Shadow Tag', 'Wonder Guard']
 	},
 	{
diff --git a/data/rulesets.js b/data/rulesets.js
index 89602d87bb..9a53776d9a 100644
--- a/data/rulesets.js
+++ b/data/rulesets.js
@@ -381,6 +381,22 @@ exports.BattleFormats = {
 			}
 		}
 	},
+	ateclause: {
+		effectType: 'Rule',
+		onStart: function () {
+			this.add('rule', '-ate Clause: Limit one of Aerilate/Refrigerate/Pixilate');
+		},
+		validateTeam: function (team, format) {
+			var ateAbility = false;
+			for (var i = 0; i < team.length; i++) {
+				var ability = toId(team[i].ability);
+				if (ability === 'refrigerate' || ability === 'pixilate' || ability === 'aerilate') {
+					if (ateAbility) return ["You have more than one of Aerilate/Refrigerate/Pixilate, which is banned by -ate Clause."];
+					ateAbility = true;
+				}
+			}
+		}
+	},
 	ohkoclause: {
 		effectType: 'Rule',
 		onStart: function () {