@AndySCovell, When a Nightsister under a zTalzin lead performs a basic attack they 'revive' a fallen Nightsister. There is nothing special about this 'revive' that would somehow make it different than any other revive. It will still provide Old Daka with a 10% Health stack just as if she had revived the unit herself with her 'Chant of Resurrection'. Likewise, if an enemy character is not defeated during that attack the 'revived' unit will then also be 'defeated', which in turn will activate any effects that would normally trigger upon a units defeat.