Below you can find the In norse mythology this god of thunder lives in a 540-room mansion called bilskirnir Jeopardy Words Answer. The answer to In norse mythology this god of thunder lives in a 540-room mansion called bilskirnir has 4 letters. This clue belongs to the Mythology category and is part of Jeopardy Word Level 1045. If you scroll near the bottom you will find other clues and answers part of level 1045