Suggestiont to fix Thief trait: Last Refuge
I vote for the Black Powder version. Seems the least likely to screw things up.
Registered Altaholic
Part-time Kittenposter
Part-time Kittenposter
Another nice option would be to leave Last Refuge as is but make it active instead of passive:
When Last Refuge triggers it enables an additional skill (Blinding Powder) via F2 button. This skill disappears after 5s or after activation.