Oath of the Outcast quest

By Guinuav, in Descent: Journeys in the Dark

Hi guys, my Oath of the Outcast quest reads at the middle top that a hero may spend an action to test an attribute that is not clear (it looks like a rotated flower to me) and that is basically not one of the 4 ones.

Does anyone know which attribute is that?

cf

It should be Knowledge.