Jaya Ballard

Because it’s a loyalty ability, Jaya’s first ability isn’t a mana ability. It can be activated only any time you could cast a sorcery. It uses the stack and can be responded to.

You choose how many cards to discard while Jaya’s second ability is resolving. You can choose to discard zero cards this way (and then draw zero cards) if you wish.

Mana produced by Jaya’s first ability can be spent among any number of instant and/or sorcery spells.