I have come from the frozen heart of Naxxramas to feast on souls and deliver a vicious threshing upon our sworn enemies - and I'm all out of souls.
This device I'm about to give you is a portable plague spreader. Take it east, to the Havenshire Mines, and unleash it near the Scarlet miners working inside. Use it to turn the miners into ghouls and return to me when you have a small army at your side. I have saved a special place for them in the vacuum cleaner of souls!
One small note: miners don't always become ghouls. Sometimes they turn into enraged spirits, hell-bent on killing you.
Completion
They now know that the mines are no longer safe. They will double their efforts in retreating, leaving their backs open to us!
Notes
Join combat with the Miner before using the Gift of the Harvester to have a better chance of getting a Ghoul compared to a Ghost.
Trivia
Gothik's opening sentence is a reference to the line from They Live, spoken by John Nada (Roddy Piper): "I came here to chew bubble gum and kick ass... and I'm all out of bubble gum." A variation of this line is also spoken by Duke Nukem in Duke Nukem 3D: "It's time to kick ass and chew bubble gum...and I'm all outta gum." (Another reference to this line is [68] Hell Has Frozen Over... in Valgarde.)