As LMNO first developed this game, Bear Trebuche wins.
Actually I was thinking of coming up with something like the following:
Spider subsuming Citizen has three possible outcomes: Citizen gets away, Citizen gets subsumed, Citizen becomes a Spider
Spider subsuming Discordian has three possible outcomes: Discordian gets away, Discordian gets subsumed and is out of the game, Discordian gets poisoned (meaning that the Discordian loses control and attempts to negatively convert a random Citizen in the next turn with out their knowledge. If successful, Citizen becomes depressed and is out of the game)
If Spider attacks Discordian and is not subsumed, the Discordian is given two names.
Discordian converts Citizen, with three possible outcomes: Citizen doesn't listen, Citizen is negatively impacted and is out of the game, Citizen becomes a Discordian.
Discordian converts Spider: Spider gets away, Spider's identity becomes known to the Discordian, or Spider gets confused and accidentally attempts to convert a random Citizen to Discordian without realizing it.
If a Discordian manages to not find out the Spider's identity, the Spider will be given the Discordian's name and a Citizen's name.
I also want to give the Citizens some sort of special ability but I can't think of what yet. Possibly finding out whether or not a specific is a Spider or a Discordian, with a 30% success rate?