And when that's added, there is a list of relays available over TOR here:
nostr:naddr1qvzqqqr4gupzpvkkwr098vnkj8qvxsqzykm9cddzd5rqjw7vg86gllr3uzg8l822qqxnzde3xserjdfjxvurjvp497akz0
Same list on GitHub: https://github.com/0xtrr/onion-service-nostr-relays