Crimson Flame

A flame, equivalent in brightness to a torch and stained a blood red, springs from from an object that you touch. Roll 4d6 for you or a willing or restrained creature to take, and reduce the target's maximum hit points by half that amount. This reduction lasts until the target completes a short rest. The effect looks like a normal flame, save for the deep scarlet color, but it creates no heat and doesn't use oxygen. A crimson flame can be covered or hidden but not smothered or quenched. The flame burns for 8 hours, then fades to a dull, reddish glow. The flame can then be reignited at any time by dripping blood equal to 1d4 necrotic damage onto the flame. At that point, the flame surges back to its former size and luminescence.