Review for LEGO set 7019 Viking Fortress vs. the Fafnir Dragon from Brickipedia
“The Viking fortress consists of an octagonal palisade with a huge gate at the front and a large dragon cage opposite to it. The gate is made of LEGO plates instead of dedicated gate pieces. The large catapult shoots metallic-colored rocks. The two dragons are custom models... More which don't appear elsewhere. They both have four legs and wings and largely consist of TECHNIC and BIONICLE pieces.”
Full review at brickipedia.fandom.com