Magic: the Gathering (MTG) 4/4 Creature — Horse card from Homelands courtesy of Deckmaster
Does not untap during your untap phase.
: Sacrifice a creature to untap Black Carriage. Use this ability only during your upkeep.
"The Baron's drivers are also driven."
HM • ENDavid A. Cherry
™ & © 1993—1995 Wizards of the Coast
Legal in: Legacy,Vintage,Commander
The ability that untaps it during your upkeep has been returned to an activated ability. There is no restriction on how many times it can be untapped during your upkeep with this ability.