Given what we've seen of his semblance it appear it has some short of phisical limit, the bad luck you get is affected by how close you are to him and how long you stayed close to him



He kept himself away from RNJR to avoid getting them bad luck, but it only affected them when he got too close, but not necessarily the moment they got next to him





he caused a beam fall over Ruby after she got close to him, but not when she was really near him

he caused that Nukealeave or whatever it is called to appear (not confirmed but highly suggested)

pretty much everything bad happened in V3 after he came back

Tyrian came to the waitress of the bar he was in (idk what happened to her but given Tyrian it wasn't a good thing)

he caused a glass to break after he left the bar







bad things happen to those that stay a long time near him, but not immediately, so given the proximity he'd have with students, is possible things like this would happen to them









either way, this is just a comic made for fun, don't really take it too seriously, I like discussing stuff liek that a lot (I'd do anything to talk RWBY without bringing ships into the mix) but if I can crank something up for comedic effect I'll do that