Here is the sideboard:

2 Forked Bolt
2 Painful Truths
2 Winter Orb (also tried clique and vexing shusher in this spot, they are all about the same strength)
2 Invasive Surgery
2 Pyroblast
1 Surgical Extraction
1 Cabal Therapy
1 Fire Covenant
1 Pithing Needle
1 Ancient Grudge