If the Black Swans are this widely identifiable, the are no longer Black Swans, by definition.
Nevertheless, I can play the silly game : Make that SIX Black Swans.
The Sixth Black Swan would obliterate the capitals and infrastructure of every member of the Organization of the Islamic Conference
the first twelve, in order of priority being...
Iran
Pakistan
Egypt
Saudi Arabia
Jordan
Iraq
Syria
Indonesia
North Korea
Morocco
Algeria
Tunisia
Thirteen through 58 can be spared if they agree to unconditional surrender within 14 days...
A black swan I can foresee is Mecca turning into a glowing crater, and islam is over in less than one year, world-wide.
Without mecca, the “hard drive” of islam, there is no islam. There cannot be islam with the “5 minus 2 pillars of islam.” There will not be islam where the prayer is, “We used to believe our god was greatest.”
No mecca, no islam. Now that would be a Black Swan and a real game changer, after 1,400 years of jihad.