I got this idea from the deck which I made for the recent Tourney.
Hover over cards for details, click for permalink
52g 52g 52g 52h 52h 52h 542 542 542 542 542 5ul 5ul 5ul 5um 5um 5um 5um 5um 5um 5up 5up 5up 5uq 5uq 5ur 5ur 5v1 5v1 5v1 8pt
its simple and seems to be effective in unupped pvp. Haven't tested it against Ai3 yet.
possible mods:
Black dragons can be switched for drain. End game it tends to have a lot of :darkness quanta.
if you need a cheap duo-deck with devourers, I found this rather effective... death looks like a wasted mark in your build...
Hover over cards for details, click for permalink
58o 58o 58o 58o 58o 58o 58o 58o 58o 58o 58o 58o 58s 58s 591 591 591 591 591 591 5um 5um 5um 5um 5um 5um 5up 5up 5up 5ur 8pt
otherwise if you want to stick with darkness/death I'd put some poison in it (and arsenic is far better than vamp stiletto, imho)...