My first thought is how cheesed off the local druids are going to be.
We had a group try almost exactly that. I was one of two druids in the party but the only one to say "No way." IIRC, this was 2e, or a homebrew, with the awesome Entangle spell. I entangled the party and threatened them to leave. They came back. I entangled them again and killed the leader. They came back, reinforced. By that time, I was reinforced by several high level Druids. Lost my character for good, but it was worth it!