Lonely Oathbreaker

Quest- Whenever an artifact Horror dealt damage
by Lonely Oathbreaker dies, if it hasn't completed
it's quest, it completes it's quest and put two
+1/+1 counters on it.
When Lonely Oathbreaker complete it's quest,
pledge 1. (Choose another target creature, this
creature becomes pledged to that creature)
Creatures Lonely Oathbreaker is pledged to
get +2/+1.