6 cards where the card is in a set of non-tournament-legal cards

Archangel (PMEI)
Ascendant Evincar (PMEI)
M'Odo, the Gnarled Oracle (HTR17)
Parallax Dementia (PMEI)
Shivan Dragon (PMEI)
Thorn Elemental (PMEI)

It is the moment of discovery, the triumph of the mind, and the end of these results.