What would happen if I overstayed the 90-day limit in the EU with a Saint Lucia passport?

Would it be revoked or would I just be fined?

Answers

On Kevin Hosam answered:

If you overstay, you risk being fined depending on the length of time or even deported. The EU country can also ban you from reentering so I therefore do not recommend you overstay as this also goes on your record when applying for entry in other countries.