Macbeth 1.2 Word Nerd: Quarry

The transcript explores the evolution of the word 'quarry', which originally referred to the worthless parts of a hunted animal given to hounds. Over time, it came to mean a group of dead bodies, either from a hunt or a battlefield, and later, the animal being pursued. Shakespeare uses both these meanings in his work, depicting Fortune as both favoring MacDonald's victims and hunting MacDonald himself.

What does it mean when it is said that 'Fortune is smiling on MacDonald's quarry'?

What implication does the phrase 'Fortune is hunting MacDonald' carry?