Turn 2: "Howling Mine triggers. You get to draw an extra card."
Turn 3: "Howling Mine triggers. You get to draw an extra card."
Turn 4: "Howling Mine triggers. You get to draw an extra card."
Turn 5: "I'll Gigadrowse Howling Mine during your upkeep. Now you can draw."
Opponent draws two cards even though Mine is tapped.