diff --git a/config/formats.ts b/config/formats.ts
index 1ef265a594..f4d5754372 100644
--- a/config/formats.ts
+++ b/config/formats.ts
@@ -1684,6 +1684,7 @@ export const Formats: FormatList = [
 						this.runEvent('BeforeFaint', pokemon, faintData.source, faintData.effect)) {
 						this.add('faint', pokemon);
 						pokemon.side.pokemonLeft--;
+						if (pokemon.side.totalFainted < 100) pokemon.side.totalFainted++;
 						this.runEvent('Faint', pokemon, faintData.source, faintData.effect);
 						this.singleEvent('End', pokemon.getAbility(), pokemon.abilityState, pokemon);
 						pokemon.clearVolatile(false);
diff --git a/data/abilities.ts b/data/abilities.ts
index dc445d0aa2..dde22007df 100644
--- a/data/abilities.ts
+++ b/data/abilities.ts
@@ -4294,17 +4294,18 @@ export const Abilities: {[abilityid: string]: AbilityData} = {
 	},
 	supremeoverlord: {
 		onStart(pokemon) {
-			const faintedAllies = pokemon.side.pokemon.filter(ally => ally.fainted).length;
-			if (faintedAllies) {
+			if (pokemon.side.totalFainted) {
 				this.add('-activate', pokemon, 'ability: Supreme Overlord');
+				this.effectState.fallen = Math.min(pokemon.side.totalFainted, 5);
 			}
 		},
-		onBasePower(basePower, source, target, move) {
-			const faintedAllies = Math.min(5, source.side.pokemon.filter(ally => ally.fainted).length);
-			if (faintedAllies) return this.chainModify(1 + (0.1 * faintedAllies));
-		},
-		onAllyFaint() {
-			this.add('-activate', this.effectState.target, 'ability: Supreme Overlord');
+		onBasePowerPriority: 21,
+		onBasePower(basePower, attacker, defender, move) {
+			if (this.effectState.fallen) {
+				const powMod = [4096, 4506, 4915, 5325, 5734, 6144];
+				this.debug(`Supreme Overlord boost: ${powMod[this.effectState.fallen]}/4096`);
+				return this.chainModify([powMod[this.effectState.fallen], 4096]);
+			}
 		},
 		name: "Supreme Overlord",
 		rating: 3.5,
diff --git a/data/mods/gen2stadium2/scripts.ts b/data/mods/gen2stadium2/scripts.ts
index d7899b470c..041f2b599c 100644
--- a/data/mods/gen2stadium2/scripts.ts
+++ b/data/mods/gen2stadium2/scripts.ts
@@ -530,6 +530,7 @@ export const Scripts: ModdedBattleScriptsData = {
 				this.runEvent('BeforeFaint', pokemon, faintData.source, faintData.effect)) {
 				this.add('faint', pokemon);
 				pokemon.side.pokemonLeft--;
+				if (pokemon.side.totalFainted < 100) pokemon.side.totalFainted++;
 				this.runEvent('Faint', pokemon, faintData.source, faintData.effect);
 				this.singleEvent('End', pokemon.getAbility(), pokemon.abilityState, pokemon);
 				pokemon.clearVolatile(false);
diff --git a/data/moves.ts b/data/moves.ts
index f07004def5..99e6727950 100644
--- a/data/moves.ts
+++ b/data/moves.ts
@@ -10194,7 +10194,7 @@ export const Moves: {[moveid: string]: MoveData} = {
 		accuracy: 100,
 		basePower: 50,
 		basePowerCallback(pokemon, target, move) {
-			return 50 + 50 * pokemon.side.pokemon.filter(ally => ally.fainted).length;
+			return 50 + 50 * pokemon.side.totalFainted;
 		},
 		category: "Physical",
 		name: "Last Respects",
diff --git a/sim/battle.ts b/sim/battle.ts
index 4a3129543c..2476c5f1a1 100644
--- a/sim/battle.ts
+++ b/sim/battle.ts
@@ -2307,6 +2307,7 @@ export class Battle {
 					this.runEvent('BeforeFaint', pokemon, faintData.source, faintData.effect)) {
 				this.add('faint', pokemon);
 				if (pokemon.side.pokemonLeft) pokemon.side.pokemonLeft--;
+				if (pokemon.side.totalFainted < 100) pokemon.side.totalFainted++;
 				this.runEvent('Faint', pokemon, faintData.source, faintData.effect);
 				this.singleEvent('End', pokemon.getAbility(), pokemon.abilityState, pokemon);
 				pokemon.clearVolatile(false);
diff --git a/sim/side.ts b/sim/side.ts
index 399486d1ba..b47e299295 100644
--- a/sim/side.ts
+++ b/sim/side.ts
@@ -84,6 +84,7 @@ export class Side {
 
 	faintedLastTurn: Pokemon | null;
 	faintedThisTurn: Pokemon | null;
+	totalFainted: number;
 	/** only used by Gen 1 Counter */
 	lastSelectedMove: ID = '';
 
@@ -134,6 +135,7 @@ export class Side {
 		this.pokemonLeft = this.pokemon.length;
 		this.faintedLastTurn = null;
 		this.faintedThisTurn = null;
+		this.totalFainted = 0;
 		this.zMoveUsed = false;
 		this.dynamaxUsed = this.battle.gen !== 8;