Always been a weird item that didnt function per descript, but even weirder now in u14..
Blood sacrifice works a little different then the official description which states it only costs 25 hit points. It actually deals 38 untyped damage in exchange for 50 spell points. This damage is effected by dungeon scaling, so while solo you will generally see (roughly as dungeon scaling does vary from class to class) these values:
Casual: 7 damage
Normal: 15 damage
Hard: 20 damage
Elite: 26 damage
Epic/Raid/Solo (unscaled damage): 38 damage
Note: This item only drops on normal/hard/elite difficulties, not epic.
Beta - Epic modes, didn't check Heroics:
Epic Casual: 23 damage
Epic Normal: 52 damage
Epic Hard: 58 damage
Epic Epic Elite/Any Raid (unscaled damage): 105 sometimes 110 damage - See screenshots
Note: Test was done on CR20 epic (Tide Turns) at lvl25. Lvl vs CR does affect scaling so your results will vary slightly.
Not much to say on this, other then it's strange and helps show us a bit how scaling works in epics:
Casual: Note that the low dmg isn't really a good indication that casual scales more. It doesn't really. Casual/Normal,hard and heroic elite all scale exactly the same despite devs claiming otherwise. Each additional party member will add the same percentage of incomign dmg/hp/etc. The difference in casual, is all numbers are scaled down 50% from normal - This is because they didnt want to code in new CR versions of every mob when they added casual difficulty.. So
Casual = Normal, minus 50% scaling. Thats it, there are no other changes from normal other then loot and xp differences.
Normal and Hard will both be at roughly 100% with 4 party members, or 120% with 6. The very minor difference in solo scaling is negated upon adding party members.
IMO this isn't good for the game, as it HEAVILY encourages soloing in all modes up to hard, and makes hard a TON easier to solo, tehn to group.
Disintegrate on epic hard solo (actual test, not theory, von1 kobold was used):
158 damage when i rolled a 1 (I saved on 2, and should of saved on a 1 cuz i had the draconic thing, but thats for a different thread)
40d3+120 at caster level 20 (capped, kobold was CR26ish iirc)
= 200 average.
Empower - +75% dmg
200 x 1.75 = 350 average.
We were at ~50% scaling due to solo, so 175 average. Kobold rolled a lil low.
In a full group:
200 x 1.75 = 350 average.
Scaling will be 120% to 130% depending on classes (casters count for more)
350 x 1.2 = 420 dmg average.
Thats enough to 1 shot certain squishy classes..
So solo: low risk of dying. Group: High risk of dying.
Balanced and fun? No. Encourages players to solo in an mmo, thats not good design.
Change epic scaling to:
Solo: 80% (40% on casual due to half damage setup)
2 man: 90%
3 or more 100%. Hardcap it at 100%.
Heroic could be the same for simplicity, or go 70/80/90/100 if you want it to be less.