How does a world-jumper get started?

[wellspring]

Originally Posted by Tom Mazanec

IIRC, a world-jumper has to be familiar with a destination world to get there.
So how does he get that familiarity before he gets there?

The jumper can also discover his abilities if he's somehow transported out of his original timeline, eg through a banestorm or nexus portal.

This makes very strong thematic sense, btw. It means if you have a setting where there's no time-line hopping, then there are of course no jumpers. But then, say the GM or a supplement introduces world-jumping. Ooops. Suddenly, we can believably retcon in the World Jumper advantage to both NPCs and player characters.

The explanation is that never having been exposed to other worlds before, their ability was always latent. Combine that with limitations like Unreliable and counterbalancing disadvantages, and the world jumper advantage becomes very reasonable. Something a player could buy with character points he has on hand. Then later he can buy those limitations and disadvantages off, as the CP become available and as he acclimates to his newly discovered power.