A tag named tricks has recently been created in this question. So far there is no tag wiki to indicate intended usage.
Do we really need such a tag? It veers slightly towards meta tags, which are generally discouraged.
To me it seems somewhat similar to proof-strategy, see the tag-wiki. (I would characterize this tag as questions that are similar to tricki articles, see this conversation in chat.) However, proof-strategy tag is often used incorrectly.