Possible entry: sleep
I think Sleep is missing an important clause.
Garrote Grip says, "...the target falls unconscious. If an unconscious target takes any damage, it is no longer unconscious."
Knockout says, "...target is knocked unconscious (save ends). If the unconscious target takes any damage, it is no longer unconscious."
Sleep says, "the target becomes unconscious (save ends)."
Sleep seems to be overpowered for a 1st level power. I think Sleep was meant to have that clause, "If the unconscious target takes any damage, it is no longer unconscious."
Circumstantial evidence:
Note that the June 7th D&D Game Day wizard had Sleep, and it said "...the target falls asleep" with no further explanation of what "sleeping" meant. That probably means that pretty close to the printing date, they were intending "sleeping" to be a condition, but it was folded into "unconscious" at the last minute and nobody remembered to add the damage clause to the Sleep spell.