Paradox Haze

• WWizards of the Coast2006-09-25
  Official Ruling
  Abilities that trigger "at the beginning of [your] upkeep" will trigger at the beginning of each additional upkeep as well.
• WWizards of the Coast2006-09-25
  Official Ruling
  If echo triggers during the first upkeep, it won't trigger again during the second upkeep since the creature won't have entered since that player's last upkeep.
• WWizards of the Coast2006-09-25
  Official Ruling
  If two Paradox Hazes enchant the same player, they'll both trigger when that player's first upkeep of the turn begins. The player will get two additional upkeep steps.
• WWizards of the Coast2006-09-25
  Official Ruling
  Paradox Haze targets a player when it's cast, and it enters attached to that player.
• WWizards of the Coast2006-09-25
  Official Ruling
  If an effect causes the enchanted player to skip their upkeep step, this ability won't trigger.

Rulings via Scryfall