Here's something I don't want to write for each ability: Unless otherwise stated, you visit whoever you are targeting with your ability. Similarly, unless otherwise stated, you cannot intentionally target yourself and mafia members cannot intentionally target another member of the mafia.
Mafia Roles You win if a mafia member is alive and there is no way (ignoring the Witch) that they can be eliminated.
Mafioso: Ability - Kill your target player. You will fail and be informed of it if your target's defense is too high, which is the case with the Bodyguard (targeting themselves), Executioner, Serial Killer, Arsonist or Witch (if not already attacked).
Additional Info - If you die, the other mafia member's role is replaced with the Mafioso.
Consort: Ability - Prevent your target from using their ability tonight. The Escort, Transporter and Witch are immune to this, and you are told if your target has that immunity. If your target is a Serial Killer, they will be forced to use their ability on you. Your target will be informed of the attempt, whether or not you succeed.
Additional Info - You are immune to the Escort and Consort's abilities.
Framer: Ability - Make your target appear as "Suspicious" to the Sheriff and "Framer, Jester, or framed player" to the Investigator tonight. This overpowers the deceptive effect of the Arsonist's dousing.
Consigliere: Ability - Learn the role of your target. If they have been doused, they appear to be the Arsonist.
Town Roles You win if the mafia and the Serial Killer / Arsonist / Witch are eliminated.
Sheriff: Ability - Receive a result based on your target's role. It will be a "Suspicious" result if your target is a member of the mafia, the Serial Killer, or a framed player, and "Not Suspicious" if otherwise.
Investigator: Ability - Receive a group of roles that includes your target's role. The different groups are: Vigilante or Mafioso; Spy (& nothing else); Sheriff or Executioner; Framer or Jester or framed player; Lookout or Witch; Escort or Transport or Consort; Doctor or Serial Killer; Investigator or Consigliere; Bodyguard or Arsonist or doused player.
Lookout: Ability - Learn who else visited your target tonight. You will receive the list in a randomized order. You will not see the Transporter or Witch at their second target nor the Doctor and Bodyguard when they target themselves.
Doctor: Ability - Prevent your target player from being killed tonight. You and your target will be told if you prevented an attack, even if multiple people prevented it, but will not receive additional messages because of extra protectors or extra attackers. You cannot prevent a kill from the Vigilante (if they are commiting suicide), Arsonist or Jester. You can target yourself with this ability once per game, and it will not count as a visit.
Bodyguard: Ability - Prevent your target player from being killed by one attacker tonight. You will kill and be killed by that attacker (the attacker will still be visiting your target, not you). You, your target, and the attacker will be told if you prevented an attack, even if multiple people prevented it, but will not receive additional messages because of extra protectors or extra attackers. If there are multiple attackers visiting your target, you affect a random one. If another Bodyguard is visiting your target, it is randomly determined which one of you faces the attacker. You cannot prevent a kill from the Vigilante (if they are committing suicide), Arsonist or Jester. You can target yourself with this ability once per game, and it will not count as a visit, nor will it kill the attacker, and attackers repelled by it will be told your defense was too high.
Spy: Ability - Learn what abilities your target knows they are affected by tonight. For a list of all the messages you can see, look
here.
Additional Info - You learn which players the mafia visits every night. This happens whether you use your ability or not.
Vigilante: Ability - Kill your target player. You may use this ability 3 times per game, and cannot use it on the first night. You will fail and be informed of it if target's defense is too high, which is the case with the Bodyguard (targeting themselves), Executioner, Serial Killer, Arsonist or Witch (if not already attacked). If you kill a town member, you will commit suicide the next night, which cannot be prevented in any way.
Escort: Ability - Prevent your target from using their ability tonight. The Escort, Transporter and Witch are immune to this, and you are told if your target has that immunity. If your target is a Serial Killer, they will be forced to use their ability on you. Your target will be informed of the attempt, whether or not you succeed.
Additional Info - You are immune to the Escort and Consort's abilities.
Transporter: Ability - Cause all targets visiting your first target tonight to instead visit your second target, and vica versa, using their ability on the new person they're visiting. They are informed that this ability was used on them, but told who the other target is. You do not visit your second target, and you may choose yourself as that target. If the Doctor or Bodyguard are targeting themselves or the Jester is targeting one of their voters, they will not be switched to another target. If the other Transporter targets one of your target players, either you or they are randomly chosen to have their ability trigger first.
Additional Info - You are immune to the Escort, Consort and Witch's abilities.
Neutral Roles Executioner: Win Condition - You win if your target (a randomly chosen town member) is lynched.
Additional Info - You cannot be killed at night except by the Arsonist, and repelled attackers will be told your defense was too high. If your target dies during the night, your role is replaced with the Jester at the beginning of the following day.
Jester: Win Condition - You win if you are lynched.
Ability - You can only use this ability the night after you are lynched, and your target must be a player who was voting for you at the end of the day. Kill your target player. This cannot be prevented in any way. This ability does not visit, and therefore you will still kill your original target even if the Transporter targets them as well.
Serial Killer: Win Condition - You win if you are the only player left alive.
Ability - Kill your target player. You will fail and be informed of it if target's defense is too high, which is the case with the Bodyguard (targeting themselves) or Executioner. If you are targeted by the Escort or Consort, you will be forced to target them instead, and target all of them that visit you if multiple do so in the same night. If the Transporter targets a Escort or Consort that visits you, you will still target them and not the Transporter's other target.
Additional Info - You cannot be killed at night except by the Jester, and repelled attackers will be told your defense was too high.
Arsonist: Win Condition - You win if you are the only player left alive.
Ability - Douse your target, secretly marking them for the rest of the game. If investigated, they will appear as "Bodyguard or Arsonist or doused player". If you target yourself, you will kill all the players you have marked. Their death cannot be prevented by anything. If you do not use your ability, you will clean yourself off, removing any mark you've put on yourself.
Additional Info - You cannot be killed at night except by the Jester or your own ability, and repelled attackers will be told your defense was too high. You are told if you are doused.
Witch: Win Condition - You win if you are alive and there is no way (ignoring the mafia) that you can be killed.
Ability - Force your first target to visit your second target and use their ability on them, if possible. You will learn the role of your first target (ignoring all deception), and your first target will be told that they were the target of a Witch. You do not visit your second target. If your first target is prevented from using their ability by the Escort or Consort, or is the Transporter, they will not be forced to visit your second target.
Additional Info - You are immune to the Escort and Consort's abilities. Once per game, if you would be killed at night by anything except a Jester's ability, you will survive and repelled attackers will be told your defense was too high. If multiple attackers attack you in the same night, a randomly determined one will be repelled.
(If I've made any errors in the role descriptions, feel free to tell me, and I'll correct them as soon as I can.)