How About that Dark Seal and Cull on NRG?

Expecting them to lose because of it

Expecting them to win because seraph isn't playing against them.

I think the Cull is an interesting pick-up good for lane swap scenarios where you aren't trading with an opponent. The Seal seems a little bit bold, but NRG does place some importance on GBM to carry. So if he stays safe maybe it is good?

Cull is better than Dorans. If you're good, that 80 hp doesn't matter.

Cull is great on kog'maw after that rework, his atk speed boost procs cull a lot, making him heal quite a bit.