Eon Hub

• WWizards of the Coast2004-12-01
  Official Ruling
  Any triggered abilities that triggered during the untap step will go onto the stack at the start of the draw step.
• WWizards of the Coast2004-12-01
  Official Ruling
  The upkeep step is skipped entirely. The turn proceeds from untap step to draw step.
• WWizards of the Coast2004-12-01
  Official Ruling
  Upkeep-triggered abilities don't trigger, and "activate only during your upkeep" abilities can't be activated.

Rulings via Scryfall