Mark Slice and Dice as positive

src/server/game/Spells/SpellInfo.cpp

@@ -3160,6 +3160,9 @@ bool SpellInfo::_IsPositiveEffect(uint8 effIndex, bool deep) const
             {
                 // Envenom must be considered as a positive effect even though it deals damage
                 case 32645: // Envenom
+                // Slice and Dice. Prevents breaking Stealth
+                case 5171:      // Slice and Dice (Rank 1)
+                case 6774:      // Slice and Dice (Rank 2)
                     return true;
                 default:
                     break;