GAME OF WANDS: THE TOURNAMENT

The Tournament in Game of Wands is a highlight in the main series.
This arc let me introduce many characters from other worlds (Twilight, Vampire Academy, Camp Half-Blood, and Hunger Games) in a crossover. Jasper Whitlock, Lissa Dragomir, Christian Ozera, Mia Rinaldi, Astrid Kolfinnsdaughter, Ava, Becca, Killian Jones, Finnick Odair, and Natalie Dashkov would in time become more important and recurring characters.
Its motto for the edition is "Spiele ohne Grenzen * Krieg ohne Schmerz".
The theme song is a "Games Without Frontiers" version with lyrics in German, English, French, and Swedish, preceded by a piece with La Marseillaise, Du gamla du fria, and God Save the Queen sung by a female, male, and mixed children's chorus respectively... referring to the commemorated 30YW edition of the Tournament. The whole competition is themed after the 350th anniversary of said edition, and hosted in the same location, the Beauxbatons campus and its environs, in Cathar country in the French Pyrinees. The female guests lodged there, while the male ones lodged in the auberge in the nearby village of Fort-Pur.

The four champions selected were:

• For Hogwarts: Renly Baratheon (Slytherin)/Christian Ozera (standing in for Renly during the trials, actually)
• For Beauxbatons: Astrid Kolfinnsdottir
• For Durmstrang: Jasper Whitlock (replaced, due to injury, by Finnick Odair halfway through the last test)
• Spare Champion (for Hogwarts): Sansa Stark (Ravenclaw)
• Overseeing Head Teachers: Tywin Lannister, Thalia Grace, and Killian Jones.

(The three champions in the 30YW edition were Amaia Itziar Otxoa, Carl Laurentz von Stahlehre, and Hortense de la Treille: a Basque werewolf peasant, a Swedish military officer, and a young French court lady who had followed her liege to the UK, to get caught in the Cromwellian wars. The latest won the cup, but donated it to Laurentz, whom she married).

In the end, Renly Baratheon died of an apparent heart attack or stroke (complications due to a hitherto upcoming heart aneurysm), in the arms of Brienne Tarth, in the encampment during the celebrations, which led to her accusation of the crime. The cup was won by Sansa Stark, who donated it to Astrid.

SPOILERS ABOUT RENLY'S DEATH WITHIN THE 'VERSE (HIGHLIGHT)
Renly Baratheon had received seropositive blood from an unknown donor (Dashkov? Most likely) during his Durmstrang years, after an injury during a quidditch match, when he was replaced by Finnick Odair. The symptoms started to surface that year, already when the Hogwarts students arrived in the Midi. So Christian, to protect the young Baratheon's health and reputation, decided to stand in for Renly, due to their uncanny resemblance, during the trials. The "Renly" that competed with Astrid, Jasper, Finnick, and Sansa was actually Christian Ozera. He hastened to exchange clothes with Renly in the camp during the celebrations, leaving the real Renly alone with Brienne... and then, Renly Baratheon (the real one), clutching his chest, suddenly collapsed...
***** Actually. the Durmstrang offer was given to Stannis Baratheon, who declined on purpose to have Renly sent away. Which acted as a catalyst for it all.