For two mana you get to fix your mana base and add incidental life that matters throughout the course of any game
Conquerors Galleon is personal favorite, it can let you tap your Dwarf cards and if you attack and transform it into Conquerors Foothold is an incredibly powerful utility land to give you plenty of options for sinking excess mana
An Upheaval, Armageddon or Death Cloud is usually game over
Youll want to build it with lots of effects that grant your opponents a poison counter as quickly as possible so that your Vishgraz is bigger, like a 5/5 or 6/6
Some cards will make you a 'lil bit safer, like Sliver Hivelord, Darkheart Sliver + Hibernation Sliver, Sedge Sliver or Crypt Sliver, Diffusion Sliver, Ward Sliver, Root Sliver, Frenetic Sliver (in last case scenarios) , Crystalline Sliver, Pulmonic Sliver, Asceticism, Privileged Position and Steely Resolve