This is a deck that I intend to use against friends and never in a tournament environment, hence no Tarmogoyf. Any feedback is appreciated. No sideboard because it's only for casual. Money is no issue here.
If you are committed to not playing Goyf, perhaps you should play a more controlling build with Liliana of the Veil and Garruk Relentless, and the full 4 Strix.
I have heard vague rumors of a moustache-dispensing vending machine in a distant laundromat, across the street from a tattoo parlor. However, this information is shaky, and time is of the essence.
I'd almost be tempted to nix Goose (doesn't seem overly strong when you can't keep them off mana through the stifle plan), up the Strix count, include some number of Jittes, and as Adam mentioned, Liliana of the Veil seems pretty solid.
My logic being that without Goyf, the real beefy creature of the deck is gone. Goose is fine, but once your opponent hits that 3 mana marker, it'll be easily outclassed. Jitte makes each of your creatures significantly more threatening, and doubles as removal. Garruk would work fairly well for this as well, as token generators + Jitte as rarely a bad move.
Thanks for the advice guys. I like the really interesting, low cost utility creatures such as Mongoose and Strix alot, so I tried to mix it up a bit. What I might do is
-4 Mongoose
+2 Strix
+2 LotV
and either
-1 Hymn
+1 Jitte
or
-1 Hymn
-1 Something (Perhaps a fetchland or Deed)
+2 Jitte
4 Wasteland
4 Underground Sea
4 Polluted Delta
4 Misty Rainforest
2 Bayou
2 Verdant Catacombs
2 Tropical Island
4 Nimble Mongoose
4 Shardless Agent
4 Deathrite Shaman
2 Baleful Strix
Instants and Sorceries - 18
4 Ancestral Vision
4 Abrupt Decay
4 Brainstorm
3 Force of Will
3 Hymn to Tourach
3 Jace, the Mind Sculptor
Open Slots - 3 <Idea>
1 Pernicious Deed
1 Forest
1 Thoughtseize
My logic being that without Goyf, the real beefy creature of the deck is gone. Goose is fine, but once your opponent hits that 3 mana marker, it'll be easily outclassed. Jitte makes each of your creatures significantly more threatening, and doubles as removal. Garruk would work fairly well for this as well, as token generators + Jitte as rarely a bad move.
Have any questions or concerns? Come take a dip in my pool.
-4 Mongoose
+2 Strix
+2 LotV
and either
-1 Hymn
+1 Jitte
or
-1 Hymn
-1 Something (Perhaps a fetchland or Deed)
+2 Jitte