Rafflesian 2014
CR 7 plant
Small plant, unaligned
Can bond with willing Humanoid creature that remains in physical contact with it for 10 min. While bonded this way host gains +2 bonus to AC and saves and resistance to all damage and rafflesian’s speed is 0 moving with host when it moves. Each time host takes damage rafflesian takes same amount. If host is subjected to effect that would force it to save host can use its save bonuses or rafflesian’s. If both are subjected to same effect only one is affected rafflesian’s choice. Rafflesian and host otherwise retain their own stats and take separate turns. Rafflesian and host can’t be separated unless rafflesian chooses to terminate connection. Rafflesian can detach itself safely from host over course of 1 hr or can detach itself from creature as an action which immediately kills host.
Bonded it and host communicate telepathically.
Reactions
When host dies rafflesian can reanimate it up to 10 days if body is still intact. During this time host protected from decay and can't become undead. Rafflesian can use bonus action to cause host to move as in life but host can't take other actions. If host could speak in life rafflesian can speak with host's voice. Host reanimated this way can be restored to life by any spell capable of that.
Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details