Inspired by One at a Time Riddle by Chrone
Entry into Fortnightly Topic Challenge #41: Short and Sweet
Start with a table at the left corner on the top
Add another letter and to another corner you hop
With the third letter, in there the Norse treat you dead
Plus the fourth letter, in there all people see you dead
The last letter you add, and “Welcome, my dear puzzler”!
What is the word?