Let's see.
Nightblade Ults:
Assassination: With certain builds, Uppercut or Force Shock deal more damage than this ability. So why waste your ultimate on this? The only useful version is Soul Harvest on the back bar.
Siphoning: Weaker and less useful version of swarming that doesn't affect enemies who get in range after the blast, doesn't heal you for ALL damage you deal like swarming does, doesn't highlight enemies, doesn't raise your resource pools, overall worse. Morph can turn it into burst heal that is about as effective as a Templar spammable heal.
Darkness: It's just Major Protection. Slot Lingering Flare instead.

I have great uptime on my Scion, especially in dungeons.
I forget which dungeon this was... Fungal Grotto maybe? After the goblin zone, we went and fought everything past the waterfall.
First swarm of crabs, scion ate them.
Baby dreugh boss, 10 seconds.
Crab boss with swarms of crabs, scion ate them.
Final boss, dead swiftly.

Only took us 45 seconds tops to get through the waterfall zone. Only took about 2 minutes to get through the whole dungeon.
Then again, it was just the daily random.


NB, Weapon, and Guild ults aren't as effective as Scion.
But, Soul Ult might be better. 72.5k over 5 seconds. That's a nice Ult.

What I put into effectiveness isn't just damage, which Scion may be lacking, but the ability for it to give you more survivability, which Scion does flawlessly.
Full heal, 5k AoE that heals you for the damage it deals, heal for 15% of ALL the damage you deal, greater resources allowing you a lot more casting, I believe it does refresh resource pools and not just health but I have to double check that, Highlight enemies within 50+ meters. That last part alone might make it one of the most broken abilities, and yet you all keep saying its useless.

If you are having trouble casting it 15 seconds after it ends, you are doing something wrong with your Ult generation.

I don't even use potions that much and I get it rapidly.

But, it is very different than Skyrim's.

Hmm... I could make an idea for that, how to make it more like Skyrim's.
By the way, Skyrim's Scion was completely broken... Although I think its werewolf was too.
Eh.
For those of you who are intent on getting it changed, I will be making an Idea to make it more Skyrim-like.

Edit: Made the idea:
https://sites.google.com/view/ideascompilationforeso/ideas-since-11012023/vampire-mk3-if-current-scion-is-mk2