I'm looking to develop a magical pet for one of my wizard PCs, I'm the DM and this is my first time as such so I wanted to ensure I wasn't creating something which could cause chaos.
After watching the Critical Role campaign, one of the players had a magical cat, which he is able to instantly summon and dismissed, had a psychic link which allowed him to control but the disadvantage was to render his physical body blind and the cat was fairly weak.
To allow my PC a similar pet, I have the following:
It's a rat which is in astral form yet has a physical presence, just translucent (whether it glows or not I'm not sure).
- Able to be summoned and dismissed with a snap of the finger (May require ring to limit it to a single hand) so it requires a hand free to use it and requires line of sight to summon.
- A psychic link allows the Wizard to control the rat within 1 mile however it also renders the Wizard blind, they can speak and move with assistance from other PCs.
- It's fairly weak, maybe 4 hit points and when it reaches 0, it will instantly jump to the astral plane which the Wizard requires time to meditate in order to search for the rat in the astral plane (thinking rolling a D20 during each long rest to indicate success of finding the rat or getting attacked by another astral creature with the risk of causing psychic damage (or something similar).
The rat is purely there as a tool, doesn't attack, able to carry or tug very light items, similar to a real life rat. More of a companion to the Wizard. Allows the chance to send the rat to investigate a location.