Now that this thread is semi-active today, I'll throw my thoughts on this type of deck into the ring. I was working on a Grixis based list for about 2 months until the DRS ban. I haven't done much since as I'm busy toying around with GW maverick immediately post ban.
Here's my latest list:
4
Flameblade Adept
4
Bloodghast
1
Prized Amalgam
1
Anger
1
Wonder
4
Hollow One
4
Gurmag Angler
2
Dack Fayden
4
Burning Inquiry
3
Careful Study
2
Entomb
4
Faithless Looting
4
Lightning Bolt
4
Tolarian Winds
3
Arid Mesa
2
Badlands
3
Bloodstained Mire
2
Cephalid Coliseum
1
Island
1
Mountain
3
Scalding Tarn
1
Underground Sea
2
Volcanic Island
SIDEBOARD
4
Thoughtsieze
2
Abrade
2
Price of Progress
1
Engineered Explosives
1
Pithing Needle
2
Silent Gravestone
3
Bitterblossom
I wanted to go with non-random discard, and the core idea of the deck is to leverage Tolarian Winds to max value. So ideal sequence would be T1 Adept, into T2 Tolarian for 4 or 5...swing for unblockable 5 or 6 dmg and drop a Hollow One 2nd main. Tolarian also makes a T3 Angler pretty easy to do. Anger/Wonder are to break board stalls with the 2 entomb tutor package, and the Amalgam is another tutor target for extra value before getting a bloodghast out of the yard.
Non-random was the goal, but I ended up settling on using Burning Inquiry despite this because the pseudo removal on them proved to be more than worth the chance of losing a playable angler/HO.
Sideboard will need work in a post DRS world. My immediate thoughts are that it should be able to play through a surgical, etc, so no longer a need for the Gravestones. Price of Progress was a test on extra reach for the kill, but probably not what's most needed anymore. Given the deck easily makes Goyf 4/5 or higher by T3, more ways to deal with that are needed...probably Big Game Hunters are where I'll start. I'm also going to have to look for a few more good options that aren't GY dependent. Other madness creatures, or such that will help give some game under a RIP, etc. Also, haven't played against much combo, so not sure if the 4 thoughtsieze would be enough...maybe more against combo.
Anyway, just thought I'd share. Any thoughts/questions are welcome!