Prismata puzzle solution: Electrovorology, Part 2

Starting state

player: 3 Drones, 3 Ossified Drones, 4 Electrovores, 6 Engineers, 1 Tarsier

enemy: 8 Tyranno Smorcuses, 2 Walls, 2 Shield Modules

set: Drone, Engineer (5 supply), Tarsier, Electrovore, Rhino

music: Mists of Tiama

difficulty rating: 3 stars

absorb on Ossified Drone when possible, o = click Ossified Drone

1. EEEo

2. R

3. save 3 Engineers, E

4. 1

5. E

6. d

7. Ro

8. absorb on Rhino

The dev team spent a long time trying to find a solution that used fewer than 5 Engineer supply, but we couldn't do it! Is it impossible?