A new spell in Races of Dragons...
This has got to be the most broken, 1st level spell I've seen in a long time.
range: close
target: one living creature w/100hps or less
Save: none
SR: yes
...1d6 damage per round...
target hps, duration
<=50, 4d4 rnds
51-75, 2d4 rnds
76-100, 1d4 rnds...