Adam had learned from Headmaster Blackwood that the First Trial was designed to avoid causing any life-threatening injuries.
At worst, participants would lose consciousness from running out of air should the effects of the spell wear off before they were able to get their hands on the magical key.
However, there were enough security measures put in place to ensure the survival of all participants involved.
Furthermore, there were countless powerful Magi who were stationed nearby. Should anything unexpected arise, they wouldn't hesitate to get involved.
That is why Adam thought it was highly unlikely that the Cult of Bones would make their move during the First Trial. It would be foolish of them.
He had fought them long enough to anticipate their movements to some degree. Based on his assessment and knowledge about the trials of the tournament, the Cult was most likely to make their move during the Second or Third Trial.
