I have finally convinced myself to let the Firestorms go from my SB. Although I am still pretty unconvinced to use Leyline of the Void as the only real threat it stops for me is Reanimator (most mirrors are a coin flip, and I'd rather have it at that than use up 4 slots risking mulling to oblivion). With a very diverse metagame and with Surgical Extraction and Gafdigger's Cage being the most used hate card, I am thinking of something like this:

A)

2 Tarnished Citadel
1 Undiscovered Paradise
3 Ashen Ghoul
4 Nature's Claim
2 Dread Return
1 Flayer of the Hatebound
1 Ancient Grudge

The DR and Flayer package, albeit a bit too shallow (as you'd want 2 DR's in the yard together with Flayer for the kill) is simply to up the threat density and to win those long grindy games against Snapcaster + Surgical Extraction decks. I would cut the singleton Ancient Grudge, unfortunately there's just too much Jitte in our meta and I'd rather cut a land.

Alternatively, I could use something like this:

B)

1 Tarnished Citadel
1 Undiscovered Paradise
3 Ashen Ghoul
4 Nature's Claim
2 Chain of Vapor
4 Firestorm

Now, the gameplan of this version of my board VS the first one is quite different. This one decides to not die to LotV, Gafdigger's etc... while still packing enough threats to beat Surgical Extraction. Firestorm is there as Nic Fit, Maverick (both with Ooze) and Goblins were the 3 decks that beat me during my last tourney. Sometimes I find beating Surgical Extraction quite easy even without boarding in the Ashen Ghouls, but it could get a bit grindy.

Lastly, I want to try an experimental board like that of below:

C)

1 Tarnished Citadel
1 Undiscovered Paradise
4 Nature's Claim
4 Street Wraith
3 Ashen Ghoul
2 Brainstorm

Brainstorm can be boarded in any game 2. Whether it be searching for your Nature Claims, instant speed cantrip to protect your dredger, or simply to put back drawn Narcomoebas. The sad thing is, you do not have any shuffle effects, but it could still be quite a tool. Street Wraith will protect you from Surgical Extractions as well. The problem with this board is that it gets a bit redundant. You will want to board most of the cards (aside from Nature's Claim) against a deck you are sure plays Surgical Extraction. Given it isn't THAT hard playing around Surgical Extraction, this seems like a waste of space. Still, I wanna try it out though.

What do you think? A, B or C? :)