Telepathy
I'd be perfectly happy either way, though. Yes, I've been for No Secondary Ability up until now, but to be honest, I was mostly pulling in that direction because I wanted to avoid (a) abilities that were too powerful and would compromise the original selected ability of Forewarn or the concept in general and (b) abilities like Own Tempo or Liquid Ooze that made no thematic sense at all; I seriously still don't know how either got any support. Telepathy, though, that seems perfectly in-theme and doesn't seem to me like it compromises anything at all, people will still be using Forewarn. My only worry is that if Telepathy wins then that will open the door to a third ability, but with so much consistent support even behind not having a second ability, I'm fairly confidant that we won't end up having a third ability.