viable demon deck or just fun?

[timp]

at last weeks fnm at myriad a couple of friends and i were discussing the extractor/sharuum effects and their implications in standard and extended
this is my thoughts for an adaptation for a vintage mill fest

looking to see if anyone is familiar with some other cards that might better augment this pile
at a quick glance i think the dark rits and an amount of the extractor demons are cutable to make room for something that someone out there might come across
hey maybe it is good as it is?

instants 21
1x entomb
4x dark ritual
4x thirst for knowledge
4x force of will
4x mana drain
1x vampiric tutor
1x ancestral recall
1x echoing truth
1x mystical tutor

creatures 7
3x sharuum
4x extractor demon

sorcerys 8
1x yawgmoth's will
1x tinker
1x demonic
1x timewalk
4x cabal therapy

artifacts 7
1x black lotus
1x mana vault
1x mox jet
1x mox sapphire
1x mox emerald
1x mox pearl
1x mox ruby

lands 17
1x watery grave
6x fetch
4x underground sea
5x island
1x stripmine

[vassago]

I think this might be too slow IMO.  I think the demon's ability is cute but other than that I think you would be better off trying a different approach.  I do not want to come across in the wrong way, but I honestly think this list would get smashed. Cabal therapy is good, but it is 100% unaceptable to miss with this card, especially since your only dudes to flash back with are a million and a half drops. 

However, I personally like Sharuum. I think this card is busted.  A good friend of mine, Meatbag, plays it in a Slaver-ish build, and I have seen it perform quite well.  The interactions with goblin welder are just plain stupid IMO.  At a recent smaller tournament down in Tucson, AZ I watched him drain into S.Titan, and then the following turn swing, tinker S.Titan into Sharuum bringing back Titan.  It was awesome.  The armageddon effect with 12 power on the table, and an active welder. GG right?  Anyway, hopefully anything I have said here will help you in the ways you are looking for.

[the_lord_shaper]

Just use blasting or grinding station with Sharuum. That way you can just shot or grind your opponent way very easily, with just a two card combo.