Players skip their upkeep steps.
12/1/2004 The upkeep step is skipped entirely. The turn proceeds from untap step to draw step.
12/1/2004 Upkeep-triggered abilities don’t trigger, and “activate this ability only during your upkeep” abilities can’t be activated.
12/1/2004 Any triggered abilities that triggered during the untap step will go onto the stack at the start of the draw step.