Sound like IILD (incubation induced...) or VILD (visualization induced...) - depending on if the visualization is something you incubate during the day or not (e.g. every time you do it, or just mentally).

Both of these techniques are closely related to MILD. These three techniques (IILD, VILD, MILD) can be done during the day and / or before heading to sleep. Each of them also has a WILD version, which is basically the same thing, just done as you fall asleep (preferably during a WBTB). If you do the WILD version then either you'll carry your awareness into the dream, or lose it but increase your chances to have a DILD later on. If you do the normal version - it will just increase the DILD chances.

Either way, haven't done these for a while, but back in the day had some success with them (specifically their WILD version).