Twitter’s court battle against Elon Musk started with a Tuesday lawsuit signed by 10 lawyers in three law firms, an early indication of the amount of legal fees and staffing on one of the most high-profile corporate litigation cases of the decade.

Observers point to a potential eight-figure legal bill coming up as a result of not only the 10 lawyers but droves of associates and others working behind the scenes. Other law firms could also be advising Musk and Twitter’s board on the battle.