Quote: (Irisado @ Jan. 14 2010, 12:29 )
In that case, I'm very confused because Greater Daemons get Reinforced armour and an invulnerable save, as does the Chaos Altar, and all of these are daemonic, yet this does not apply to Daemon Engines, so forgive me if I am misconstruing the point being made here, but I cannot see any consistency here at all.
It's not automatically "daemon possession = invulnerable save". It's never been a formula.
For background, in 40K, it generally takes 2-3 armor penetrations to completely disable a vehicle, so that's roughly what a "kill" in epic equates to. Daemon possessed vehicles can ignore the light hits, but after 2 or 3 hits there it is still a high probability that the vehicle is disabled.
In other words, daemon possession is not much of a benefit at Epic scale. A unit with Reinforced Armor is already tough enough that the boost of daemon possession probably doesn't matter.
Whether to make a possessed unit Invulnerable has to be evaluated on how tough you want the unit to be overall. Maybe it gets IS, maybe not.
For an otherwise lightweight unit, adding IS is a quick, easy way to make it a little bit tougher. Honestly, a +1 to the armor save would have worked just as well, but IS gives it a little bit more "special" feel. For some units that had RA, it was already tough enough so nothing was added. For the really big daemon-possessed engines, because of the lack of shields they needed IS to make them effective so they got 4+RA and IS.
It's the same thing for infantry units. Some units in 40K have Invulnerable saves which translated into Invulnerable in Epic. It represents a base level of toughness without being a major boost. I think all the lesser daemons fall into this category. OTOH, some infantry units have Invulnerable saves in 40K, but are so tough overall that they warranted RA in Epic and they did not get an Invulnerable Save on top of that. The 40K-invulnerable is just part of the RA save. Terminators are an example of that.
The Greater Daemons in epic are War Engines, not the paltry GDs that show up in 40K, so they can't even be compared. Like the large WE daemon engines, because they don't have shields they need both RA and Invulnerable saves to let hem hold up against armies with multi-TK.
So, again, there was no formula. It was all done case-by-case.