Much of that depends on whether getting home at all is even a possibility.

[Viktor still thinks, occasionally, of trying to reverse-engineer the summoning ritual, even with the added complication of parallel universes and alternate timelines in the way. For now, however, he has other priorities.]

I'd thought, at the start, that I might be able to puzzle out the summoning ritual, but adding in various timelines complicates the situation somewhat, to the point where I'm not even sure it's worth worrying about.