A basic checklist for a successful fantasy dungeon crawl.

Things to include in your fantasy map:

OSR~! それは素晴らしい！
Do you use the old school hardback texts, or the even older paperwork in the original D&D game?

There is no such thing as being perfectly healthy.
And the sad reality is that civilization creates the breeding grounds for the teratogens that cause birth defects in seemingly healthy people.

You have this need to ignore reality.
i cannot help you with that.

Yes darling, that is your understanding and that is all yours.
May it give you comfort.

Causes of defects in a fertilized human egg include:

Chromosomal mutations
Errors in segregation
Genetic mutations in signaling pathways and meiosis-related genes
Epigenetic alterations
Chromosome abnormalities due to errors during meiosis or mitosis
Teratogens (substances causing birth defects).

Angels in Heaven chose evil and consequently were either thrown out or chose to leave on their own.

Ultimately the choice of evil ends in expulsion from Heaven,
so evil MUST exist in Heaven as a choice.