Spectre, Stage 1

Boons:

• Spectral Presence. Your Dexterity increases by 2 and your Charisma increases by 1. No ability score can increase above 20 in this way. If your transformation is due to contact with the afterlife, you become Undead. If your transformation is due to an abnormality with reality, you become an Aberration. You’re immune to effects that only affect a creature of your new type of a specific CR. Also, you cease aging and cannot be aged magically.

• Spectral Movement. Your walking speed increases by 10 feet. In addition, you can move through other creatures and solid objects as if they were difficult terrain and you can move through difficult terrain as if it were normal. If you end your turn inside a creature or object, you’re shunted back to where you entered and take 1d6 force damage per 10 feet (rounded up) you travel in this way. Objects that have been in your possession less than 1 minute cannot move through creatures and objects with you. As a final benefit of this boon, due to your incorporeal nature, during your turn you have resistance to all nonmagical bludgeoning, slashing, and piercing damage from sources you can see.

Flaw:
You have disadvantage on all death saves when not on the Ethereal Plane.