Endure Elements.
Share Language (Utopian).
And then -- despite general Asmodean best practices -- because, Esta has said to himself, it seems more likely that Mariona is at the center of this game than himself; and while Esta would be amazed and indeed doubtful if it seemed as simple as curing 'insanity', Mariona may do better without any subtle ability damage she's picked up over the last months of eating strange things --
Heal.
And Esta will not be present to hear out Merrin's reaction to his use of what might or might not be an irreplaceable resource on her and not on him, because Esta now must actually pray.