Alright, this is pretty high quality, although I would not use it as a hydra replacement as it is set up. Rather, here's my idea: A new Zerg unit, can be an evolution of Zergling as SC1 doesn't have any. Ranged anti-ground. The large "Eye" makes it a plausible detector, although the portait will need to portray it. To use it without extending lists, we can merge the Birth and Death anims into the same GRP; just that the Iscript will have to change for it. This prevents using three image slots. So you only need the unit itself and the shadow (because it needs a different sprite render mode; you can bake it in the same GRP, but will still need its own image entry nonetheless)