Against Shops you want to take out cards like Duress, Defense Grid, and Gitaxian Probe for artifact/enchantment removal and extra mana sources.
Against Mentor you want to put in your extra Grids/Duress effects and side out a land or two and dead cards such as Hurkyl's. If you need to side out more cards, I'd look heavily at Necropotence, Dark Petition, Draw7s, and the one mana cantrips, potentially even a a Ritual or two (Dark or Cabal)
It doesn't matter much what you side out. Just be sure to leave in Tendrils, Will, and Lotus
So, I got back into Vintage this summer. Built omnioath and the answer. Post B/r I built grixis pyromancer but tore that apart yesterday. Was debating tez, oath, or storm. Decided to build storm. Gold fishing obviously feels amazing b/c you're not being disrupted (and Yawgmoths will is the most fun card in all of magic to cast) but I was also curious about boarding. that's about what I was thinking but wasn't thinking about sideboarding out land. I built Efro's list from the vintage challenge:
http://mtgtop8.com/event?e=11033&d=262815&f=VI13 LANDS
1 Badlands
1 Bloodstained Mire
1 Library of Alexandria
4 Polluted Delta
1 Swamp
1 Tolarian Academy
4 Underground Sea
Disruption:
3 Cabal Therapy
4 Duress
2 Hurkyl's Recall
Rituals
2 Cabal Ritual
4 Dark Ritual
Get Cards
1 Ancestral Recall
1 Brainstorm
4 Dark Petition
1 Demonic Tutor
4 Gitaxian Probe
1 Ponder
1 Time Walk
1 Vampiric Tutor
Draw 7s:
1 Wheel of Fortune
1 Timetwister
Mana facts:
1 Black Lotus
1 Lion's Eye Diamond
1 Lotus Petal
1 Mana Crypt
1 Mana Vault
1 Mox Emerald
1 Mox Jet
1 Mox Pearl
1 Mox Ruby
1 Mox Sapphire
1 Sol Ring
Engine:
1 Necropotence
1 Yawgmoth's Bargain
1 Yawgmoth's Will
1 Mind's Desire
1 Tendrils of Agony
SIDEBOARD
4 Ancient Tomb
3 Defense Grid
1 Empty the Warrens
2 Hurkyl's Recall
2 Mindbreak Trap
3 Ravenous Trap
I don't have any match experience so I guess I'd type up what I'd guess and looking for perspective:
Against and deck with lots of counters, mental mistep...drain...fow. So mentor, oath.
+3 Defense Grid
-2 Huryl's recall
-1 Swamp
Shops:
+4 Ancient Tomb
+2 Hurkyl's recall
-4 Duress
-2 Cabal Therapy
Tez:
+2 Huryl's recall
-2 Cabal Therapy
Storm Mirror:
+2 Mindbreak Trap
+2 Ravenous Trap
+1 Empty the warrens
-2 hurkyl's recall
-1 Wheel of fortune
-1 timetwister
-1 Swamp
Dredge:
+3 Ravenous trap
+1 Empty the warrens
+2 Mindbreak trap
+3 Ancient Tomb
-2 Hurkyls recall
-4 duress
-3 cabal therapy
I'm sure I'm way off I just would like to see more discussion.
the deck is very different than when SM wrote about it here
http://www.themanadrain.com/index.php?topic=40609.0Would like to see an updated primer that at least has to speak to Mental Misstep if not Dark Petition