Can Hexx3r use her Vade Retro to displace herself? (not using the switch) The more general question is: can you target yourself with an ability that says "Target"?
Vade retro is 1-4 . Your range whit yourself is 0, so the answer is no. Parvati Medikit is 0-5 for example.
No, because the range would need to be 0-X instead of 1-X to affect the character themselves. See Parvati's Actions for a comparison.