-sigh- Commanders emphasis on color identity in deckbuilding has successfully kept Krrik, Son of Yawgmoth from being a huge problem in the format as a whole, but its still a powerhouse that should be removed or countered on sight against decks with a large or exclusive emphasis on black, as 4 mana can easily become as much as 16, more if life gain enters the equation
most token decks)
Sacrifice this to fetch up a key land
Then if you control nine or more Gates, put the rest into your hand
Archivist of Oghma is very strong in fetch land metas or tutor-heavy tables
Aron, Benalia's Ruin Brimaz, Blight of Oreskos Elas il-Kor, Sadistic Pilgrim Hideous Fleshwheeler Moira and Teshar Ria Ivor, Bane of Bladehold Selenia, Dark Angel Seraph of New Phyrexia Vivisection Evangelist