the way we mean to use oblit is not what your thinking.
Stack Necros and using your frost runes on Howling:
When to use Oblit:
Is it a?
Cloth/Leather wearer, KM is not up: No
Cloth/Leather wearer, KM is up: Yes
Mail/Plate wearer, KM is not up: No
Mail/Plate wearer, KM is up: No
Mail/Plate wearer, KM is up AND below 35% HP: Yes
It's very situational. Not something to worry about unless you know how to use it correctly.

