Confused Adept

{3}{t} Confused Adept targets one of opponent's
creatures at random. Roll a d20. If the result is
less than or equal to the combined power and
toughness of Confused Adept, exile Confused
Adept. If no more than one-third of the result is
equal to at least half of the combined power and
toughness of the targeted creature, that
creature gets -X/-X until end of turn, where X
equals the power of Confused Adept minus the
toughness of the targeted creature plus the d20
result.