Someone on Reddit brought this up. The troop Sacrifice is unable to kill your last troop if it has a barrier despite the change from the 4.6 update:
Create 15 Gems, a mixture of Purple and a chosen type. Kill the last ally. All other allies gain [(Magic / 2) + 1] Magic, boosted by Death Marked enemies.
(This was fixed at some point 
)
Apparently no such thing as a Lethal Damage spell category. Every spell which does lethal damage updated manually one-by-one, some not get updated.
Like taking Megavore to Mirror Halls, very bad idea as I remember, reflect still instant kill you if Megavore’s 3rd trait triggered on a troop which has reflect.
Oh that’s awkward. I didn’t think editing the post would bump to the top.
This specific one was fixed at some point.
Glad this was fixed. You could update the title of the original to say [fixed] if you want…
Since it’s at the top anyway, did you know: If a troop with barrier gets deathmarked and the deathmark triggers… barrier is removed, and the troop is no longer deathmarked (but also not dead).
(as far as I know this is working as intended, and also not a bug).
It also removes all of it’s Armor (iirc)!! Bit of a weird idiosyncrasy, imo 
. Not good for Rowanne ToD teams 
.
Although iirc also, the Death Mark remains (unless it also cleanses that same turn???), just the Troop survives and the Barrier is removed (and Armor as well).