Iroas’s Devotee

Piety Trait

Piety 3+ Iroas trait

As a devotee of Iroas, you have earned his favor through victories won in his name. You can cast compelled duel with this trait a number of times equal to your Charisma modifier (minimum of once). You regain all expended uses when you finish a long rest. Charisma is your spellcasting ability for this spell.

Source: Mythic Odysseys of Theros p. 49