I can beat Orp, and arguably beat NeedAName depending on how Infect scores.
Play 1B as land. Mana: B (20 Life)
Play B as Dark RitualDark Ritual. Mana: BBB
Play 1 as Myr MoonvesselMyr Moonvessel. Mana: BB
Play B as Culling the WeakCulling the Weak, targeting Myr Moonvessel. Mana: 1BBBBB
Play BBB as Infernal ContractInfernal Contract, drawing B, 1G, 1WW, and R. Mana: 1BB (10 Life)
Cycle Edge of AutumnEdge of Autumn (1G), sacrificing your land, drawing U. Mana: 1BB
Play Gitaxian Probe``` for 2 life Gitaxian Probe``` (U) for 2 life, drawing BB. Mana: 1BB (8 Life)
Play Cabal Ritual for 1B as Cabal Ritual. Mana: BBBBBB (Graveyard was 1B, B, 1, B, BBB, 1G, U)
Play Blood Celebrant for B as Blood Celebrant. Mana: BBBBB
Play Death's Shadow for B as Death's Shadow. Mana: BBBB
Activate Blood Celebrant for R, G, B, B, B, B, B. Mana: BBRG (1 Life)
Play Crimson Wisps for R as Crimson Wisps on Death's Shadow, giving it haste and drawing G. Mana: BBG
Play Glistening Oil for BB as Glistening Oil, enchanting Death's Shadow and giving it Infect. Mana: G
Go to combat and swing, then cast Berserk forplay G as Berserk on Death’s Shadow, giving +12/+0 and trample
Hit for 24 infect (0 cards in deck, 1WW in hand)
```Presuming we're playing by Mental Magic's rule set, this is legal per MM.3i.