2nd GQ or 3rd Taiga?

Just MD the stony?

Outdated SB notes:
NOTE: Many lists here aren't perfect +x/-x guides, since in many cases, one ofs depend on opposing build, like if they're on tinker-bot.
Keep maze vs BSC. Cut chasm if against tendrils. Keep grudge over rod if they're on Crucible. Keep rod over grudge if they're on Will, maybe keep rotation-bog too.
--Don't forget that your own cage stops your Grudge flashbacks!--

Oath
Cutting grudge is a bit of a gamble. They sometimes have needle but more often have 4x Crypt, but Crypt isn't the end of the world since Bazaar wont get Wastelanded.
Swapping rods for stony is almost free against non-wasteland fair decks, esp ones with grudge.
Builds not running Misstem (MM) make life easy and make rotation great. Consider bringing in extra rotation if you're keeping all MM in, but Rotation is pretty good in this MU.
I kinda want a Ramunap in this MU.
-3 Grudge
-bog
-2 manabond
-3 Rods
-Chalice (on draw, MM on play)
+2 Stony
+2 claim
+2 cage
+3 Decay/trophy
+ rotation
+ chains

Fair Blue
You can cut Tabnernacle if they're not on creatures. Don't cut maze if they're on tinker-bot.
--If they're not on white, you can probably just natural draw into Stage+Depths and beat them that way, lol--
-2 rod
-2 rotation
-2 bond
-bog
-maze
-chasm
-karakas
+4 Bob
+3 decay/trophy
+2 claim
+chains

PO
If the don't have tendrils/jace, feel free to go all-in on rotation. Chasm beats mentor, blightsteel, and infinite turns in some cases. Feel free to cut rotations if they are just trying to tendrils you. Tabernacle > chasm if tendrils + mentor
-2 manabond
-1 bog
-2 tabernacle
+chains
+2 Stony
+rotation?
+2 claim

Survival
If they're not on deathrite, or any real gy hate, a single crop rotation for chasm will probably win you the game. Wasteland + Nacle works well here. Choke the mana or race with a 20/20. Bog rotation is good too.
-2 MM
-2 manabond
-chalice (on draw)
-karakas
+rotation
+2 cage
+2 claims
+3 Decay/trophy

Dredge
Grudge is relevant here for Hollow draws. Don't cut MM because you want to fight over your rotations.
-3 rod
-2 manabond
+ rotation
+2 cage
+2 claim

Shops
Good MU, but try to not get raced or color-screwed. Note that Nacle is amazing vs Shop, Creature, go.
-2 MM
-bog
+2 Claims
+ rotation