How can a monk reincarnated in Tantric Buddhism be reincarnated if he dies unexpectedly?

There are many unexpected things. In the Qing Dynasty, the reincarnated living Buddha was easily destroyed, and the Lama clique was fighting among themselves all day. Gan Long took a golden urn to measure and sign it. In other words, the living Buddha who draws lots is protected by the central government, so don't poison others easily.

Of course, this is historically speaking. I don't know much about religion. Living buddhas always have magical powers.