Advanced Search Sets Random Syntax Abzan Runemark Bane-Marked Leonin Beastmaster's Magemark Biting Remark (playtest) Black Market Black Market Connections Black Market Tycoon Bloodmark Mentor Chosen of Markov Cliffside Market Cornered Market Culling Mark Deathmark Deathmark Prelate East-Mark Cavalier Edgar Markov Edgar Markov's Coffin Farm // Market Farm // Market Fencer's Magemark Guardian's Magemark Hapatra's Mark Hawkeye, Master Marksman Hexmark Destroyer High Market Horn of the Mark Hunter's Mark Infiltrator's Magemark Jeskai Runemark K-9, Mark I Make Your Mark Mardu Runemark Mark for Death Mark of Asylum Mark of Eviction Mark of Fury Mark of Mutiny Mark of Sakiko Mark of the Oni Mark of the Vampire Marked by Honor Marker Beetles Market Festival Market Gnome Marketback Walker Marketwatch Phantom Markov Baron Markov Blademaster Markov Crusader Markov Dreadknight Markov Enforcer Markov Patrician Markov Purifier Markov Retribution Markov Waltzer Markov Warlord Markov's Servant Moodmark Painter Mouser Mark III Necromancer's Magemark Necron Deathmark Night Market Night Market Aeronaut Night Market Guard Night Market Lookout Oteclan Landmark Our Market Research Shows That Players Like Really Long Card Names So We Made this Card to Have the Absolute Longest Card Name Ever Elemental Remarkable Readings Riders of the Mark Riftmarked Knight Scorchmark Scourgemark

Greyfax helps with winning the game quicker but Marneus keeps cards flowing, giving you access to more effects
Or, would you want to play any of the other two at all
Maybe you prefer the Modern incarnations of mill and hold your Hedron Crabs and fetch lands very dearly
If you play it all out right, these two cards could get you to victory pretty quickly
If you run one of these commanders, you may need to have a Rule 0 discussion with your pod before you play your deck: Generally, these are commanders that most players don't want to play against at, say, Bracket 2, as Commander Format Panel member, Gavin Verhey puts it