Leone had a soulbound artifact called the Worldcaller's Whistle.
This whistle allowed Leone to summon an Elemental appropriate to the immediate terrain.
But its true merit lay on its function to summon an Elemental two ranks ahead of Leone.
Although he was currently a Rank 2 Hero King, three stat points were all he needed to become a Rank 3 Hero King.
In other words, after gaining three points, Leone could summon a Rank 5 Elemental with the Worldcaller's Whistle!
Like all powerful artifacts, it had a downside. It was up to luck whether the Elemental he summoned would be hostile to him or not.
A Rank 5 summon was quite powerful. Fortunately, he had plenty of people on his side who could deal with it if it ever turned hostile.
The ancient summoning scroll Lugh had given him was similar in nature but was more dangerous.
It could summon a Rank 9 Elemental King that could destroy an entire empire in a single day! Fortunately, this particular summon could only last for an hour.
