A plague doctor stood in front of the beast, regarding him and the offered potion. A bird, a corvid of some kind but not any one specific type, perched on his shoulder, tilting its head as it also looked on with beady black eyes. Opaque lenses hid away his eyes, hiding the easiest way to read him, but if the beast was adept at reading body language, he may notice the rigid set of his shoulders. Mildly uncomfortable, but not enough to flee, too interested in the strange concoction being offered.
And how could he not be interested? He was an alchemist and a man of science, and this potion was something he has never seen before. He could only wonder at what components made the pitch black liquid..
After the contemplative silence, the bird is the one who speaks, croaking out, "I think I will stick with potions of fire giant strength, I know what those are made of and they don't have the side effect of..being hungry. However, I will certainly take it off your hands for the purpose of studying, if you find that agreeable."
The doctor's small abode smelled strongly of alchemical ingredients, with the faint scent of mint underlying it, like it was trying to undercut it and make the space more pleasant. One table held books, flipped open to unreadable texts and diagrams, with some having magical projections over them that recorded hours. Another table held neatly chopped herbs and components, with potions bubbling in bottles above medieval bunsen burners. The doctor himself was at this table, testing a dark liquid in a beaker. His bird sat perched over in the corner of the room, who immediately eyes the newcomer.
The cloaked figure glances at them, but doesn't address them right away, delicately putting the liquid he was experimenting with away. Then he turns and his bird asks for him, "You don't seem injured or sick, so you're here for a potion I presume? Something for an adventure, maybe?"
He looks over the newcomer, idly tapping the table with his fingertips as he considers this person. "I think I may have something that will be helpful for you," said his bird, and then the man turns to a nearby shelf filled to the brim with potions. He delicately sorts through them before picking out a long bottle filled with a steaming, red liquid.
He returns to the stranger, holding out this potion for the other to see. "This is a potion of fire breath. As the name implies, you will gain the ability to breath fire for a short time, perhaps about three to five minutes. However, this doesn't come without risks. If you don't drink a potion of fire resistance before using this, it will burn your throat and mouth, and then I suppose you would be seeing me again to heal it, hm? What say you?"