Remove:3x Forest2x Plains1x Swamp1x Isolated Chapel1x Stirring Wildwood1x Woodland Cemetery1x Sunpetal Grove

Add:1x Reliquary Tower1x Vesuva1x Fetid Heath1x Twilight Mire1x Urborg, Tomb of the Yawgmoth1x Rogue's Passage1x Command Tower1x Ancient tomb1x Relecting Pool1x City of Brass

Winter Orb Magus of the Tabernacle

Instead of Beast Within, I recommend black removal like Hero's Downfall and mabe Garruk, Apex Predator. I also recommend 40 lands, with around 20 ramp and draw spells (do the ratio as you see fit). The ramp should be done around how you want to do stax, so if you're adding contamination, things like Gilded Lotus are better than Rampant Growth

Vorinclex, Voice of Hunger for more land hate with ramp

I think four wrath cards is a pretty good number.