Incomplete Damage Tests

Engulfing Ice
with 16 Demonic Ice
(Elemental stats don't seem to have any effect on damage, I tested with 16 and 50 and had the same result. Demonic Damage Techs DO affect engulf damage however.)
36 damage per hit
17 with weapon
8 with rock skin
4 with rock skin and weapon
Engulfing Shadow
48 damage per hit
18 with weapon
Only midround attacks trigger the damage, but it IS on every hit. Not just when you see a "X is hurt by your engulfing Y"
Life Stealing Horns
with 100 Demon Buffs 
Deals around 400 damage, heal for a flat 600 hp rather than a percentage of max health as initially expected.