Hello does Miracle Potion II let you morph your pet into common experiments?
yes, it lets you change the species of your pet to any species you want, including experiments. it will keep the color of the original pet, so if you want the common experiment, you will either have to start with a common pet or use a common potion before or after the miracle potion ii.
(or, it might automatically convert the pet to common if it's a color that the new species doesn't come in; not sure if that's how it handles this now. i think it used to result in a minor glitch where the pet would be an impossible color-species combo and have a blank pet image, so you'd have to change the color to something the new species comes in.)