Outrageous Carnage is a 1 off effect for 4 damage and removes 3 units,
Skull Throne requires you to make 3 removals of units to reach its maximum potential but effects the board and is persistent.
I would say Skull Throne is, but it requires build up.
The 3 removals of your own units is really tough though?
Outrageous carnage for me. That for damage with the potential to remove enemy units is much more valuable in my mind.
For your convenience.
Skull throne is "Clunky", so you only rotate the card when you remove a unit.
My understanding is that it is your own units. However I am taking this trail of thought based on the green indicated lanes. However other than that it doesn't specifically state an allied unit, so the possibility that it's also an enemy unit is possible. Even so I would say on "Removal" of an allied unit
Outrageous Carnage is really good for several reasons, Late game comeback? Yes. Early game advantage? Yes. Allows Archaon to draw ridiculous amounts of cards? Yes. Combos with rejoice in slaughter? Yes. Most players are more inclined to use Units? Yes.
i think the card is refering to remove (doesn't matter if your or enemy cards) then the extra dmg affects to the highlighted spots.
Carnage, skull throne needs setups, which is ok, but the big negative is, that he also increases self-damage