Caustic Song file (optional):
Yes, wavetable synthesis (ex. Massive and Serum) is entirely possible in Caustic 3.
The concept is simple enough. In the attached file you can see a simple morph between two waveshapes via crossfading. If you play the song or turn the marked mixer knob you can see the results in the lower scope. But using the PCMsynth you can create your own very complex wavetable and then tweak the output in a Modsynth allowing for some pretty amazing control.
I've posted a video here:
Watch the lower green screen and you will see 32 single cycle waves morphing in sequence. However you can have up to 88 waves in a table and morph between any waves, in any order at any speed - controlled manually, with automation or using LFOs etc. It's incredibly flexible.
What you hear is not run thru any filters or post processing except for a Decay envelope, delay and reverb.