'The heart of a newborn devourer.' Jörmungandr thought, 'A treasure that would be sought after even by the primogenitors.'
Jörmungandr knew that Lady Sphinx was investing this much in Felix not just because that the project seemed a worthwhile experience but also so she could bet on him during the games!
Jörmungandr was already filled in by all of the details about the primogenitors' games, ranging from their rules to the way of entry.
There wasn't a rule that forbids two or three primogenitors from choosing the same champion and betting on him.
However, to combat abuse, they initiated that both primogenitors would require to bet a treasure each on their champion while their opponents require to bet only once.
This made the primogenitors ignore the option. However, in the case of the Jörmungandr and Lady Sphinx, they were special.
The Jörmungandr was already dead and merely a tiny of his consciousness still lingering around.