The sword fell down really close to him and it startled Brogan to no end. He looked over the ridge, from where the sword came from, and saw the Hero shouting something to him. Brogan took out the sword from the ground and spun it around in his arm a few times and took it in a strong grip. While he had no expertise in using katanas, he somehow felt rather familiar with the weapon. It had a really good balance in his arm and he felt that he could move around with this blade in his hand easily. Not as easy as with a knife, but easy nevertheless. 

During this time of evaluation, the agents have closed in to him and Bard and Brogan did not have time to cover the blade in poison. Then again, he will need to give it back, so maybe it was for the better. This fight was one on one, as one of the agents made the Bard busy, and the other one was focused on Brogan. Before the initial swing from the cultist, Brogan launched himself with as much force he had in his legs towards the agent. There was no way someone could react to this, Brogan thought, but to his mistake, he was thrown to the side, by the block of the agent. "How did you manage to deal with one, Bard?!" he shouted, while getting his stance ready for another attack. 

Or defense. Brogan decided to defend from this attack and as the agent swung, Brogan used the side of the blade and made the mace slide down to the handle of the sword, where it stopped. This was perfect for what Brogan had in mind. He used his sword as a lever, where the cross-guard acted as a fulcrum, he moved his blade with a great force and it slashed the agents neck open. Suddenly, he felt that the pressure on his sword was getting weaker as the agent succumbed right in front of him. He spun the blade in his hands once more and pierced the agents heart, ending his life.