Can't Kill A Legend

Regenerate target legendary creature. (The next
time this creature would be destroyed this turn, it isn't.
Instead tap it, remove all damage from it, and remove
it from combat.)
It gains Undying. (When this creature dies, if it had
no +1/+1 counters on it, return it to the battlefield
under its owner's control with a +1/+1 counter on it.)
Bahroom. The forest has heard the cry of death and returns with this response: We're coming. Bahroom