I have a PC that is very interested in the idea of playing a bestiaal when it makes sense for the story. On the stats page in the bestiary it says:
"Metamorphosis. You can shapeshift, adding new features to your body."
How would you handle this? the monster gets 3 of them and can summon them as a bonus action.
This feels a little too powerful for a player character.
Would you limit how they can use the metamorphosis e.g. only one active at a time and limit it to proficiency bonus per long rest?
or would you limit what they can use? e.g no weapons or armour?