Sure you can, Poopsie.
Four slaves opens for soul slay time (opposition, control, battle fortune...))... though of course it is better to use more slaves (and more masters) to reduce fatigue costs and make it harder to resist the spammed soul slays.
Eight slaves will get your S1 masters to S4 (enslave mind, vortex of returning, doom, will of the fates)
Sixteen slaves, Northern Light + Power of the Spheres, and two boosters, and everything purely astral up to and including master enslave is within reach - not bad for somebody starting at S1.... Actually, I have never tried to go for master enslave starting on a S1 chassis since it is so much better using one of higher level and use all equipment slots for penetration, but unless I've missed something obvious it should work.
Re: Sauromantian Soothsayers: are they there exclusively to feed my evil blood ritual
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