Are you wondering if a black dragon can survive for 2 rounds? I hope we're talking about a neutral battlefield.
In my opinion, with 20 trials, the black dragon will win in approximately 11 of them. I hope you'll do the calculations yourself and write them here. And at the same time, you can run 20 trials. Just remember: neutral battlefield!

Орден Феникса – харизматический :) лидер