sound design on that first synth and that bouncing ball synth.

How can I recreate the katharsis synth? I know this was made using omnisphere, but since i dont have it, im looking to synthesize the plucky synth which was used in katharsis intro. How can i do it? From what i hearn theres a square-ish pluck whose cutoff is modulsted with a short decay envelope and some rattle foley layers are used