Most played cards in Mono Black:

34 Decks
 ↓ Dark Ritual
132 copies – 3.88 avg
↓ Thoughtseize
122 copies – 3.59 avg
↓ Dauthi Voidwalker
93 copies – 2.74 avg
↓ Opposition Agent
93 copies – 2.74 avg
↓ Wasteland
88 copies – 2.59 avg
↓ Leyline of the Void
81 copies – 2.38 avg
↓ Orcish Bowmasters
68 copies – 2 avg
↓ Hymn to Tourach
62 copies – 1.82 avg
↓ Plague Engineer
61 copies – 1.79 avg
↓ Urza's Saga
49 copies – 1.44 avg
↓ Dark Confidant
46 copies – 1.35 avg
↓ Liliana of the Veil
45 copies – 1.32 avg
↓ Sheoldred, the Apocalypse
44 copies – 1.29 avg
↓ Fatal Push
43 copies – 1.26 avg
↓ Sudden Edict
42 copies – 1.24 avg
↓ Chrome Mox
41 copies – 1.21 avg
↓ Urborg, Tomb of Yawgmoth
37 copies – 1.09 avg
↓ Reanimate
36 copies – 1.06 avg
↓ Karn, the Great Creator
36 copies – 1.06 avg
↓ Grief
36 copies – 1.06 avg