If they allowed it to charge towards them, it was almost certain that they would be defeated. Making his decision in that split moment, Blake spoke in a solemn voice.
"I'll be honest with you all, I'm already completely spent. It's a miracle that I am still standing. My arms and legs have feel heavy as if they are blocks of steel. I guess it's the same for you all. That said, if we allow it to charge at us, there would be no hope for victory. Somebody has to stand in between it and stop its charge"
A heavy silence fell amongst the adventurers. To stand in between its charge meant that they would have to take the full brunt of its impact.
In the state that they were in, this was practically a suicide mission. One of them would have to sacrifice themselves for the team. Although Blake did not say all that, the meaning was clear.
They would have to make the decision now, who would go up and die?