Two beings in one body comes with advantages and disadvantages. The being within you is determined to survive and granted you abilities to do so, gain +1 to your dexterity. The presence of another conscious being within you grants you proficiency to perception and investigation. Additionally, it grants you a powerful defense against against all attempts to charm, control, or frighten you allowing you to roll saving throws with advantage against these. The very strength of your defences makes them unpredictable, however. Roll a d20 on the following table to determine what happens, 1) after a successful saving throw against being charmed; 2) if you have been charmed, immediately after the effects of the charm have ended. At level 10, you Faint only on a 1 regardless of whether you have been successfully charmed, and release your Fury on a 19 or 20.
| d20 | Cohabitation Defense |
|---|---|
| 1 | Faint: You collapse as if in a coma, immune to all enchantments but unconscious and unable to revive yourself. You remain in this state until revived by healing magic or a healing potion. If you have been successfully charmed, you collapse on a 1 or 2. |
| 2-10 | Overwhelmed: Your consciousness is torn between your two halves thrown out of balance: you cannot move or act. At the end of your turn, roll a Wisdom saving throw. On a 10 or higher you save, ending your restrained condition. On a 9 or lower you remain split and continue to roll saving throws at the ends of your turns. |
| 11-19 | Fortitude: Your psychic defences hold. You retain control over yourself; your next attack deals an additional 1d6 psychic damage. |
| 20 | Fury: Your psychic defences lash out with steely fury, reflecting the force of the enchantment back on its caster to deal 1d12 psychic damage +1d12 for each level of the spell cast against you. Until the end of their next turn, the would-be enchanter can cast no more spells. |