Eurydice

Naturally, the first thing that comes to mind is to offer up his daughter Eurydice to the King for... well, the usual... seeing as his wife Olympias clearly isn't 'meeting his needs'. Of course, when Phillip II likes the arrangement enough to get around to divorcing Olympias, this only succeeds in provoking Alexander's wrath.

Despite his mother's insistence that he do something in retribution for her being kicked out of the palace and him being deprived of the throne, Alexander seems to be biding his time for some reason... so Olympias instead cuts loose with a series of nightmarish visions she sends directly to Eurydice, convincing her that there are snakes in her baby's crib, etc. (Oh, didn't I mention? Time flies when you're making babies... Eurydice has already borne Phillip II a brand-new heir and Attalos is one happy man.)

So's the King, by the way. At the upcoming celebration of the Macedonian victory over Aigai, generally the statues of the 12 Olympian gods are paraded through the square… but Phillip II has decided to add a 13th statue of himself (because that's likely to go down well with the public), and at the same time make the announcement of his new heir to the populace.

Alexander shows up at the event, having made various overtures of non-hostility to dear old dad, who is thinking that maybe he'll be able to use Alexander after all. A double assassination attempt is made on the King's life, and while the first one is thwarted by Alexander, the second succeeds. In the meantime, Eurydice and her infant son are struck down by a curse cast by... well, not really hard to guess, is it?