I think you can have less pillar (about 8 darkness e 5 aether, mark of darkness).
I also will include drain life, for creature control.
The Lobo isn't that problem, since it doesn't affect the ability of devourer, it only removes from them the "burrow" skill (bug?...), and with drain life you can have a spectacular finish drainir a lot of hp from the opponent, mastering it with about 66% rate (I'm playing a very similar deck, so I know how it works).
For example, this is the unupgraded version of my deck, which fits your idea.
5uk 5uk 5uk 5uk 5uk 5uk 5uk 5uk 5uk 5um 5um 5um 5um 5uo 5uo 5up 5up 5up 5up 5uq 5uq 5us 5us 5us 5us 5us 5us 5ut 5ut 61o 61o 61o 61o 61o 622 622 622 622