Mystery theme number whatever by MassogliaB

FILL IN THE BLANKS from this Shakespeare quotation: "_____ _____ and let slip the dogs of war"

As recounted in Leviticus 25:8-13, what is the name of the Christian EVENT, mentioned to occur every fiftieth year, in which debts would be absolved, the enslaved and imprisoned would be set free, and the mercies of god would be especially evident? The most recent was in the year 2000.

The NAME of what MYTHOLOGICAL FIGURE, first described in Homer's Odyssey, means "abounding in songs and legends"?

Though not psychoactive, as the divinorum species, the genus of what HERB is salvia?

What PLAY, written by Eugene O'Neill, is set in Greenwich Village circa 1912, and was adapted into a film version in 1973 featuring such actors as Lee Marvin and Jeff Bridges? (edited at 7:16 pm, September 2, 2015 (PDT))

Of the Seven Wonders of the Ancient World, which is the ONLY ONE which was made primarily of metal?

What British GENERAL, born in 1695, was killed during an expedition bearing his name at the Battle of the Monongahela, in French-occupied portions of what is now the USA?

Which EPISODE of the television program Doctor Who introduced the threat known as the Weeping Angels, quantum predators disguising themselves as stone statues which can only be thwarted by keeping an eye on them constantly?

What is the METEOROLOGICAL TERM for a tropical cyclone with maximum sustained wind speeds between 34 and 64 knots?

Which is the only PIECE on a chess board which can only ever travel on a single colour of square?

What FAMOUS OPERATIC COMPOSER popularized the term "Gesamtkunstwerk", or "total work of art", referring to a synthesis of different media of art into a single masterpiece? (this is not his most famous legacy)

If you've figured out what the theme is, DO NOT say that here, but instead give me an UNUSED example that fits the theme.