If Hidden Blade targets a unit that survives due to Unlicensed Armory, does the Hidden Blade player still draw 2 cards?

Ruling: Yes, you still draw 2 cards when Hidden Blade targets a unit that survives. The draw effect is not conditional on the unit dying.

Nuances:

• The draw effect checks for controller, not owner. If the unit is returned to hand before Hidden Blade resolves, you do not draw.
• If you react to Hidden Blade with something that kills the chosen unit before Hidden Blade resolves, you do not draw because the unit is gone and has no controller when Hidden Blade checks.