Originally Posted by
Agrippa91
Here's my current version of the deck (with stifle), sideboard updated:
creatures (13)
4 Delver of Secrets
4 Deathrite Shaman
3 Young Pyromancer
2 Gurmag Angler
instants and sorceries (29)
4 Force of Will
4 Daze
4 Stifle
1 Spell Pierce
4 Brainstorm
4 Ponder
3 Gitaxian Probe
4 Lightning Bolt
1 Forked Bolt
lands (18)
3 Volcanic Island
2 Underground Sea
1 Tropical Island
4x Flooded Strand
4x Polluted Delta
4x Wasteland
sideboard (15)
2 Pithing Needle
1 Grim Lavamancer
1 Surgical Extraction
1 Pyroblast
1 Flusterstorm
1 Invasive Surgery
3 Cabal Therapy
2 Abrupt Decay
1 Ancient Grudge
1 Terminate
1 Fire Covenant
There're some important differences between the stifle version and the nonstifle version of Grixis. Most importantly you play much more like a tempo deck, meaning to the board. You really only want to attack their hand with Therapies from the sideboard if they're playing combo (I don't even bring in Therapies against Miracles anymore).
Abrupt Decays can get played not only against Miracles, but also against Wasteland decks since your stifles protect your lands. It's really good against other "fair", especially Tarmogoyfs and spicy sideboard tech like ensnaring bridge, chalice, Rest in Peace or a random jitte.
I know that many Grixis players play Baleful Strix these days, that's really not what you want to do when you play stifle though imo. The reason is that (besides costing 2 at sorcery speed) the Strix doesn't pressure the opponent enough when you're ahead on board, meaning he can catch up really well. I also don't like how it grows Tarmogoyfs, gets countered by Red Blast and gives us more guys that die to -1/-1 effects like Golgari Charm or even Forked Bolt.
Painful Truths is similar in that it costs 3, so you can't hold up counters when you play it. It also doesn't affect the board and it's not like you're drawing pure gas like a deck like shardless bug, but mostly reactive cards.
Instead of Strix and Truths I prefer Terminate and Fire Covenant which are also really good against Eldrazi. Fire Covenant I only bring in against decks that don't play counterspells because you pretty much lose if it gets countered (shardless being the exception because they board their FoW out very often and you can make them play their FoW into Daze rather often when you play your Fire Covenant because of the instant speed).
Personally I like the stifle version of the deck way more because it makes Dazes and Wastelands better as well as being better against bad matchups like 4c-loam, lands and Miracles.
To the sideboard: I cut Winter Orb because I feel like Pithing Needle is just better against Miracles, it also has uses against D&T and Lands which are rather bad matchups (hence I went up to 2).
Most people play 2 Pyroblasts, but I cut down to 1 because I have Abrupt Decays against Counterbalance and Flusterstorm/Invasive Surgery against Show&Tell.
Deathrite Shaman is already a Public Enemy number one when you're playing this deck because he makes stifle and wasteland look really bad. I have Grim Lavamancer in the sb over Darkblast for that reason.
The card advantage cards in my sideboard (Grim Lavamancer, Ancient Grudge, Fire Covenant) are there because they still let me play the tempo plan. It's not wrong to play something like Strix's and Painful Truths, it's just way better in the midrange-approach without stifles imo.
One last advice:
The cards you cut in fair matchups are mostly Force of Wills and Gitaxian Probes. When in doubt leave in 1-2 Force of Wills, sometimes you have to counter something, it also lets you use redundant Dazes and Stifles later in the game.
In unfair matchups you cut the Anglers first. Delver is faster, DRS is more disruptive (and lets you keep open mana while draining them) and YP has synergy with Therapy. Also Bolts come out fairly often in unfair matchups.
Matchups where I board out stifles are D&T (I leave in 1), Eldrazi, Infect, Merfolk, Burn (I leave in 2 for fetchlands and Rift Bolt, it still pitches to FoW), Stompy and Elves (they don't rely on their fetchlands, stifling craterhoof is awesome game 1, but they often bring in something like progenitus game 2).