Where can I find Defense strengthening in Magstadt?

Defense strengthening can also be found in these cities:

Aidlingen Althengstett Asperg Böblingen Calw Ditzingen Filderstadt Gerlingen Herrenberg Korntal-Münchingen Kornwestheim Leonberg Ludwigsburg Niefern-Öschelbronn Ostfildern Renningen Schönaich Sindelfingen Stuttgart Wangen im Allgäu Weil der Stadt Wiernsheim

You can also find this in Magstadt:

Baguette Yeast Dry Rye Breads Granola Bar Pies Cola Legumes Ketchup Chips Remoulade