diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index defc442262..95ff4f4a04 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -170,6 +170,7 @@
 #define B_X_ITEMS_BUFF              GEN_7 // In Gen7+, the X Items raise a stat by 2 stages instead of 1.
 #define B_MENTAL_HERB               GEN_5 // In Gen5+, the Mental Herb cures Infatuation, Taunt, Encore, Torment, Heal Block, and Disable
 #define B_TRAINERS_KNOCK_OFF_ITEMS  TRUE  // If TRUE, trainers can steal/swap your items (non-berries are restored after battle). In vanilla games trainers cannot steal items.
+#define B_SOUL_DEW_BOOST            GEN_7 // In Gens3-6, Soul Dew boosts Lati@s' Sp. Atk and Sp. Def. In Gen7+ it boosts the power of their Psychic and Dragon type moves instead.
 
 // Flag settings
 // To use the following features in scripting, replace the 0s with the flag ID you're assigning it to.
diff --git a/src/battle_util.c b/src/battle_util.c
index 15e61ebf5b..0585bb4b62 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -8075,7 +8075,11 @@ static u32 CalcMoveBasePowerAfterModifiers(u16 move, u8 battlerAtk, u8 battlerDe
             MulModifier(&modifier, holdEffectModifier);
         break;
     case HOLD_EFFECT_SOUL_DEW:
+        #if B_SOUL_DEW_BOOST >= GEN_7
+        if ((gBattleMons[battlerAtk].species == SPECIES_LATIAS || gBattleMons[battlerAtk].species == SPECIES_LATIOS) && (moveType == TYPE_PSYCHIC || moveType == TYPE_DRAGON))
+        #else
         if ((gBattleMons[battlerAtk].species == SPECIES_LATIAS || gBattleMons[battlerAtk].species == SPECIES_LATIOS) && !(gBattleTypeFlags & BATTLE_TYPE_FRONTIER))
+        #endif
             MulModifier(&modifier, holdEffectModifier);
         break;
     case HOLD_EFFECT_GEMS:
@@ -8488,6 +8492,14 @@ static u32 CalcDefenseStat(u16 move, u8 battlerAtk, u8 battlerDef, u8 moveType,
         if (!usesDefStat)
             MulModifier(&modifier, UQ_4_12(1.5));
         break;
+#if B_SOUL_DEW_BOOST <= GEN_6
+    case HOLD_EFFECT_SOUL_DEW:
+        if ((gBattleMons[battlerDef].species == SPECIES_LATIAS || gBattleMons[battlerDef].species == SPECIES_LATIOS)
+         && !(gBattleTypeFlags & BATTLE_TYPE_FRONTIER)
+         && !usesDefStat)
+            MulModifier(&modifier, UQ_4_12(1.5));
+        break;
+#endif
     }
 
     // sandstorm sp.def boost for rock types