• When you cast a spell through your mark, it also burns painfully and induces greater paranoia.
• increase Con score by 1.
• Learn a cantrip or first level spell from the sorcerer spell list. Once you cast it, you must finish a rest before you can cast it again through the mark. Constitution is your spellcasting ability for these spells.
• When you cast the spell through your mark, you can expend one of your Hit Dice and roll it. If you roll an even number, you gain a number of temporary hit points equal to the number rolled. If you roll an odd number, one random creature within 30 feet of you (not including you) takes force damage equal to the number rolled. If no other creatures are in range, you take the damage.

A deal gained through parley with a white dragon. In exchange for allowing the party to live after attempting to trick him, the player character must attempt to kill their party members. The dragon can cast Scrying at any point on this character as long as they are on the same plane of existence.