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Resulting random description:

There is a bejeweled frog-folk knight here in bright garments.

<-- Checking or Unchecking this will fetch new random results (as will changing any cell, but this is easier)

<- Randomly Selects one item from the list below

<- Counts the number of entries in each list

< -- Add items to the end of the lists, the selector will find them

< - If you want to make certain resutls more likely, put them in their list more than once.