It's a fantasy role-playing game.

DM: You are Mollymauk Tealeaf, a tiefling blood hunter . You are the member of the famous group of adventurers. Previously,  However, upon noticing that some of the buildings on the eastern side of town began to light up with what appeared to be flame, you began to approach rather rapidly, seeing members of the city's citizens fleeing, screaming, and apparently there seemed to be some sort of attack. Upon going into the town, you realized that a number of these buildings were being set fire by an incursion of Gnolls.
DM: With that roll, I'd say you surmise somewhere in the neighborhood of about 18 or so gnolls. From what you can gather on the tracks that you found.
Player: Would my Hunter's Bane be useful for that? For tracking these creatures?
DM: You can attempt to glean information.
Player: Since they technically have some undead around them?
DM: For the specific-- sure. Go ahead and make a survival check to see if you can even find those tracks.
Player: Just a standard one? Standard survival check. All right.
DM: Well, technically you're tracking undead, so you get advantage on this one.
Player: 17.
DM: Same degree. You find the tracks, you see there is the remnants of this gnoll horde returning towards a similar direction. You find three sets of cart tracks.
