Sacrifice has a large CD though, so it alone can't exactly save her MP. She would still have to keep her MP up. If Sacrifice gives 900MP and a level 3 CH costs 300MP that's only 3 heals from sacrifice.
She did mention also MP potions.... and literally with pots, u will never run out of MP.
I had Lv. 1 Sacrifice and my gear wasnt near as good as her's but I grind for 5 hours straight without needing a break thanks to MP potions.
Mp pot gives u 80mp every 2sec for 20second duration = 800mp with 30sec cooldown
If you add your basic regen (lets just say its like...) 100mp per 5s for 30s = 800mp
800(pot) + 600(Regen) every 30 seconds, most likely more depending on your Wis n gear.
Literally the only way to run out of with mana while using potions is to spam Critical Heal.
But when your CH heals you for 1.9k HP You really dont have to spam.
Another thing is.. I'm pretty positive that Sacrifice:
Lv1 500HP > 350 MP
Lv2 600HP > 450MP
Lv3 700HP > 550MP
I could be wrong.. but I just know its not that much.
P.S... Who have spam Critical Heal before raise ur hand !!!! (- _-)//
I admit I have spammed CH on a girl playing a Mage and her brother thought she was watching p0r_n
Our developers r so thoughtful, they even thought of our lonely men souls O_o....