Pacifism - 2004 Gabriel Nassif (8ED) (SB) [World Championship Decks]
Oxidize - 2004 Julien Nuijten (DST) (SB) [World Championship Decks]
Overrun - 1999 Matt Linde (TMP) (SB) [World Championship Decks]
Ornithopter - 2004 Aeo Paquette (MRD) [World Championship Decks]
Order of Leitbur (Group) - 1996 Bertrand Lestree (FEM) (SB) [World Championship Decks]
Orcish Settlers - 1998 Brian Selden (WTH) [World Championship Decks]
Opt - 2001 Antoine Ruel (INV) [World Championship Decks]
Opposition - 2002 Sim Han How (7ED) [World Championship Decks]
Opposition - 2001 Alex Borteh (7ED) [World Championship Decks]
Ophidian - 1997 Paul McCabe (WTH) [World Championship Decks]
Opalescence - 2000 Tom van de Logt (UDS) [World Championship Decks]
Obliterate - 2001 Jan Tomcani (INV) (SB) [World Championship Decks]
Nomads en-Kor - 1998 Brian Hacker (STH) [World Championship Decks]
Nimble Mongoose - 2002 Raphael Levy (ODY) [World Championship Decks]
Nightscape Familiar - 2002 Carlos Romao (PLS) [World Championship Decks]
Nevinyrral's Disk - 1998 Randy Buehler (5ED) [World Championship Decks]
Nevinyrral's Disk - 1997 Paul McCabe (5ED) (SB) [World Championship Decks]
Nether Spirit - 2001 Antoine Ruel (MMQ) [World Championship Decks]
Nekrataal - 1998 Brian Selden (VIS) [World Championship Decks]
Nekrataal - 1997 Jakub Slemr (VIS) [World Championship Decks]
Necratog - 1997 Jakub Slemr (WTH) [World Championship Decks]
Nantuko Vigilante - 2003 Dave Humpherys (LGN) (SB) [World Championship Decks]
Mystical Tutor - 2000 Tom van de Logt (6ED) [World Championship Decks]
Myr Incubator - 2004 Manuel Bevand (MRD) [World Championship Decks]