Would you rather die, or become a slave to darkness?

NB: This is a continuation of a comic dub I found on youtube. You can find the link here and there. You MUST watch it before reading this, otherwise it won't make any sense haha. Also, I'm yet to come up with a decent description of this so it may change at some point, as will the tags.
This takes place in the same universe as the IDW Comics that featured Rarity turning into Nightmare Rarity.
Dialogue sentences that appear in italic is the conglomerated voice that gets mentioned, so don't get it confused with normal dialogue or words that appear in italic in the middle of other sentences.