For the purposes of this guide, stick with Gonti, Canny Acquisitor as your commander
This includes mana rocks, of which there are nine, Spawn/Scion makers (eight), cost reducers (four), and even a mana creature (Snapping VoidcrawSnapping Voidcraw), a card that steals lands (Oblivion SowerOblivion Sower) and a mana increaser (Forsaken MonumentForsaken Monument)
Planar Genesis Though simple, Planar Genesis is quite the potent card
Cards like Agent of Masks, Blind Hunter, Ghost Council of Orzhova, Mourning Thrull, Orzhov Guildmage, and Pillory of the Sleepless all bled your opponent to death, draining one life point at a time (well, two in the case of Blind Hunter)
It grows your dork and then has hexproof to shut down targeted removal too
Perfect for 4-player Commander games