Note: This pack is now part of
Unimplemented Objects Templates.
These are the potentially useful sprite sheets of objects 2:18-19.
I'm positive it may be possible to recreate them, but it may involve shifts.
You can find their sound effects
here.
Note: The last frame of their Shifting and Explosion animations can't be seen in-game (in the originals). After cropping them, I decided to keep the original versions for completeness.