Whether it was the Pegasus or the Unicorn, individually they were still too powerful of a monster.
They were imagining themselves going head to head against such monsters.
But they didn’t realize that the added tension along with these thoughts would stiffen them further mid battle.
They could not drink the drink, because they were already tension filled.
In combat, just as stats and skills, having morale was just as important.
With so many people gathered together to fight, they could not ignore the psychological factors of the group.