Magic Bottles

Potions are volatile and dangerous, gotta keep them in a good magic bottle.

Magic bottles are rare magic items and the only safe way to store ~magic liquid~.
Otherwise:

1. it becomes completely inert
2. it turns into poison
3. it turns into water
4. it evaporates
5. it melts the container
6. it explodes the container
7. it freezes the container
8. container bursts into flames
9. container starts to float
10. it becomes contained void

This is also why you would need a magic cauldron to brew potions.

Also, it limits the number of potions carried by the party. No more potion stocks to replace clerics