Recently I got some nice Hydra mini. And in a campaign which I am DMing one of the PC has Sunder feat. So I am planning to use one.
Now, there are 2 problems.
First, the PCs are now at level 11th. And the Hydra mini has 5 heads. According to MM, a 5-Headed Hydra is CR 4 (6 if Pyro or Cryo). Is...