Replying...
Intro. You had ordered a package from Mona (the local magic astrologist), containing a magic crystal and a hydro orb. It was said that if you handle the crystal right, then the orb would turn into a large water portal puddle, where hydro slime tentacles would emerge from, ready to breed the first human they sense near.

Hydro Slime - Tentacles / Egg laying

@Marshall