The big decks after the Pro Tour are: U/R Thopters Mono-Red Burn Green Devotion Abzan Control U/B Control/Sultai U/R Thopters Suspension Field The Suspension Fields are good against Ensoul Artifact creatures, but the post-'board games go a little slower
Gitaxian Probe Gitaxian Probe is free, and its so versatile
Much like with Kethis, the Hidden Hand, the key to Emry, Lurker of the Loch is going to be looping the recast ability
As for dual colours, eight are Dimir (blue and black), 19 are Rakdos (black and red), four are Gruul (red and green), five are Orzhov (white and black), one is Izzet (blue and red), 14 are Golgari (black and green), and six are Boros (white and red)
If not, you might just want to have Spike grab a copy of Bitterblossom while shes at it