Image Item No. Description  7016-1 (Inv)  Viking Boat against the Wyvern Dragon 99 Parts, 2 Minifigures, 2005 Catalog: Sets: Vikings  7018-1 (Inv)  Viking Ship challenges the Midgard Serpent 543 Parts, 6 Minifigures, 2005 Catalog: Sets: Vikings  7019-1 (Inv)  Viking Fortress against the Fafnir Dragon 979 Parts, 6 Minifigures, 2005 Catalog: Sets: Vikings  7020-1 (Inv)  Army of Vikings with Heavy Artillery Wagon 270 Parts, 7 Minifigures, 2006 Catalog: Sets: Vikings