How does a Rubric Marine heal? The rules in Tome of Fate don't cover this. Obviously they can naturally heal, but I can't imagine Medicae working on them.

1. What about Biomancy powers like Unnatural Healing? Fluff-wise, I'd say no, but rules-wise, it would work. Even the name, "Unnatural Healing", suggests it may work on a space marine that is animated by sorcery.

2. Since its essentially an empty suit of armor, would Tech Use repair it?

How have your groups handled it?

Rubric marine is a marine-sized daemon engine possessed by marine instead of daemon and can be treated as such.