Yes, diviner is a Scrabble word!

Adjective

1. Emanating from God

2. Resulting from divine providence

3. Being or having the nature of a god; 'tis God-like to create"-J.G.Saxe

4. Devoted to or in the service or worship of a deity

5. Appropriate to or befitting a god

6. Being of such surpassing excellence as to suggest inspiration by the gods

Noun

1. Someone who claims to discover hidden knowledge with the aid of supernatural powers