Delver

Out-3 Reap and Sow -4 Thermokarst

In+3 Scattershot Archer, +3 Hornet Sting +1 Serrated Arrows

Anti Flying/ Targeted Kill, good for extra stopping against Delver.

Affinity

Out -3 Reap and Sown -4 Thermokarst

In+3 Ancient Grudge +2 Serrated Arrows +2 Scattershot Archer

The Grudges for artifact kill, the arrows for extra kill, and the Archers for extra blockers.

Hexproof

Out-4 Thermokarst -1 Reap and Sow

In+2 Serene Heart +3 Scattershot Archer

More blockers through the Archer, and Heart to kill all the auras when you need to blow them out with bad blocks.

MBC

Out-4 Thermokarst -1 Reap and Sow

In+3 Scattershot Archer +2 Serrated Arrows

More blockers/ Sac creatures with the Archers, and the Arrows for more Removal.

TronNo sideboard, you run 7 land kill spells, you should be able to out ramp them, and win out.

Slivers/Goblins/Stompy/ White Weenie

Out- 4 Thermokarst -1 Reap and Sow

In+3 Hornet Sting +2 Serrated Arrows

More removal, land kill is to slow vs aggro

Delver Fiend

Out-4 Thermokarst -1 Reap and Sow

In+3 Scattershot Archer +2 Serrated Arrows

More blockers and Removal.

Boros Kitty

Out-4 Thermokarst -3 Reap and Sow

In+3 Scattershot Archer +2 Serrated Arrows +2 Ancient Grudge.

Removal, Artifact kill, and Archers to kill fliers.

Azorious KittyNo sideboard, just go over the top on them, they are slow and durdly, you have raw power on your side

Burn

Out 2 Thermokarst

In2 Relic of Progenitus

Ramp into a Frangren Marauder and then start gaining life. The two relics can give you 10 extra life.

MUC

Out-1 Prophetic Prism -1 Crop Rotation -1 Fangren Marauder

In+3 Scattershot Archer

They almost only play flying creatures, the Archer is is anti flying.

Tortured E

Out- 2 Thermokarst

In+2 Relic of Progenitus

Use the Relic to keep they graveyards in check, then Crush them out.