Does Yuna, Grand Summoner's ability trigger when Yuna itself dies?
No, Yuna's second ability only triggers when another permanent you control is put into a graveyard from the battlefield. Yuna's own death does not trigger the ability, so you won't get to tutor or put cards onto the battlefield when Yuna itself is destroyed.
No, Yuna's second ability only triggers when another permanent you control is put into a graveyard from the battlefield. Yuna's own death does not trigger the ability, so you won't get to tutor or put cards onto the battlefield when Yuna itself is destroyed.