Hi community!
Video:
Demo: https://codepen.io/prisoner849/full/PwYrZvR
Looking at another demo: How to draw a sine wave of changing wavelength? - #5 by prisoner849, I had a feeling, that that dodecahedron has to be cut by the contour of the card.
And the current demo is what I came up with: the using of RenderTarget to create kind of a portal effect.