This is a great, reliable form of ramp for green decks that can be played early for a quick head start

Giving Them the Answer with New-Sheoldred | Commander | Abe Sargent Commander (1) 1 Sheoldred, the Apocalypse Creatures (23) 1 Burnished Hart 1 Drana, Kalastria Bloodchief 1 Dread Presence 1 Epicure of Blood 1 Erebos, God of the Dead 1 Filth 1 Gray Merchant of Asphodel 1 Kokusho, the Evening Star 1 K'rrik, Son of Yawgmoth 1 Liliana's Shade 1 Murderous Rider 1 Nightmare 1 Nirkana Revenant 1 Noxious Gearhulk 1 Rankle, Master of Pranks 1 Reiver Demon 1 Seizan, Perverter of Truth 1 Solemn Simulacrum 1 Tivash, Gloom Summoner 1 Veinwitch Coven 1 Vilis, Broker of Blood 1 Vito, Thorn of the Dusk Rose 1 Witch of the Moors Planeswalkers (1) 1 Liliana of the Dark Realms Instants (5) 1 Crushing Disappointment 1 Crypt Incursion 1 Defile 1 Hagra Mauling // Hagra Broodpit 1 Tendrils of Corruption Sorceries (12) 1 Bad Deal 1 Chainer's Edict 1 Corrupt 1 Dark Deal 1 Demonic Tutor 1 Exsanguinate 1 Feed the Swarm 1 Infernal Offering 1 Mutilate 1 Nightmare Incursion 1 Peer into the Abyss 1 Syphon Mind Enchantments (5) 1 Black Market Connections 1 Exquisite Blood 1 Greed 1 Sanguine Bond 1 Underworld Dreams I have 59 non lands, one modal land, and then 40 normal lands here

Shaymin EX While there are a couple of different Shaymin EX cards thatll do a good job for you, the best of the lot is undoubtedly the one with the Set Up ability
If you cast Jokulmorder on turn 7, it nukes your land base back down to 2