Open where-fore opened 2 years ago
A simple test on 3/15, game ver 3.4.1.48503 (PTR), confirmed that negative threat from Feint can be transferred with Tricks.
Relying on the in-game threat API, provided into the Details Tiny Threat, you can cast Tricks on a target and then cast Feint, and watch their threat go down.
Vanish seemed to have no effect at a glance.