I have observed that Davy Jones can become unkillable if he is shrunk down by Ian while his Dead Man’s Chest is not currently on the battlefield. The damage Jones takes in this state is greatly reduced. Only 1 damage from any source (at least any source that I tested) which also prevents his chest from spawning from taking severe damage. This makes Jones much stronger against teams with Ian because this interaction allows him to enter a state where he can still deal basic attack damage, take almost no damage, and build up energy for his white skill.
