Drulvurg, the Lost Troll

Drulvurg, the Lost Troll cannot block.
Undying (When this creature dies, if it had no +1/+1
counters on it, return it to the battlefield under its
owner control with a +1/+1 counter on it.)
{1}, {t}, Remove a +1/+1 counter from Drulvurg,
the Lost Troll: Drulvurg, the Lost Troll gains
hexproof until end of turn.
Thrun was supposed to be the last... alive!