[1.7.6 Ashes] First use of Demon Seed overwrites unique seeds

[Erenion]

The first time Demon Seed is used, it will always inflict the debuff and always create a fire imp seed.
If this is done to the Planar Controller (in other words, if Demon Seed is not used at all until then), it will overwrite the unique demon seed you would get, locking yourself out of said seed.
This also works on other unique demons, although getting that far without using Demon Seed may be tough.