This page shows the different variations of the Wniebowzięcie from an Icons8 icon pack. Feel free to resize and recolor the icon, and then download the icon in PNG format for free. Icons are available in PNG and vector.
The icon Entering Heaven Alive looks like a pyramid made out of 7 straight lines, starting with the longest on the bottom and getting shorter on the way up. There is a cloud at the top that has a door in the middle of it.