Keld the Demon

First strike.
If you don't own a creature name ''Azula Bumi'',
Exile Keld the Demon.
For every 1 damged giving to Keld the Demon is instead giving to Azula Bumi in the form of -1/-1 counters. Everytime you remove a -1/-1 counter
from Azula Bumi, Keld the Demon gets a +1/+1
counter.
Parthner with Azula Bumi