Traveling Plague
Odyssey — rare
Enchantment — Aura
Traveling Plague rulings:
2006-05-01: In Two-Headed Giant, triggers only once per upkeep, not once for each player.
2005-08-01: When the enchanted creature leaves the battlefield, this card is placed into the graveyard as is normal for an Aura when it loses what it enchants. The triggered ability returns this card to the battlefield with no counters on it.
2004-10-04: A counter is placed on every player’s upkeep, not just the controller’s upkeep.
2004-10-04: The controller of the dead creature chooses the new creature.