Was this fear? No way to be sure- but it seemed too much thought through for an impulsive response, at the very least. No more time to think it over, though. If they were lucky, they'd have something left over- assuming they made it through.

Thancred swallowed the potion and reached for a set of his own daggers, moving to ensure they wouldn't interrupt the paths of the others' attacks before casting Throw himself. In the next moment, he activated Stealth, waiting to see what would come next.