A little puzzle, 3 GA's, ended - updated with solution

This is for BrokenAge and Soulblight.Have fun solving this puzzle, it is for lvl 2 and will last until 17th december.

/(?<![binolvz ])([^!.,127ABSTabdefhikmnoprstuvw ])(?![l])/g

Solution:

A regular expression (regex) is a sequence of characters that specifies a match pattern in text.
So it can be used to match specific parts in a text.

If we apply the given regex: /(?<![binolvz ])([^!.,127ABSTabdefhikmnoprstuvw ])(?![l])/g on the description text This is for BrokenAge and Soulblight.Have fun solving this puzzle, it is for lvl 2 and will last until 17th december. we will get the following matches: "g","l","H","z","c". An easy way to do this is by using online regex matching tools like: https://regexr.com/ , https://regex101.com/ or use any programming langue/script to apply the regex. (see appended image which shows regex101.com)

And the 5 letters matched in the text can be used in the steamgifts url like steamgifts.com/giveaway/glHzc/.

More deteiled explanation what does the regex is doing:

1. The ([^!.,127ABSTabdefhikmnoprstuvw ]) part tells us, that any character is matched which is not one of .,127ABSTabdefhikmnoprstuvw.
   So applying this, we only have the characters gllgHlgzzlllllll left from the sentence.
2. The (?<![binolvz ]) is a negative lookahead and tells us, that we only match characters if there is no character of type inolvz before the given character. So we only have the characters glHzc left. Example: In Soulblight we only match one l Soulblight since the other l has a b before it, and the g has a i before it.
3. This is a negative look behind checking on the value behind it. This is teoretically not neccessary, but since some online tools had problems with the double "l" I added it so each tool provides the correct answer.

View attached image.

View attached image.