If the total cost to activate a loyalty ability contains multiple costs to add or remove loyalty counters, those costs are combined into a single cost to add or remove loyalty counters, as appropriate.
May 3, 2019 · War of the Spark
A loyalty ability with a negative loyalty cost can’t be activated unless the permanent has at least that many loyalty counters on it.
January 25, 2019 · Ravnica Allegiance
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.
February 1, 2014 · Born of the Gods
A loyalty ability with a negative loyalty cost can’t be activated unless the permanent has at least that many loyalty counters on it.
September 30, 2011 · Innistrad
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.
June 17, 2011 · Commander 2011
A loyalty ability with a negative loyalty cost can’t be activated unless the permanent has at least
April 1, 2011 · Duel Decks: Knights vs. Dragons
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.
February 4, 2011 · Mirrodin Besieged
A loyalty ability with a negative loyalty cost can’t be activated unless the permanent has at least that many loyalty counters on it.
October 1, 2010 · Scars of Mirrodin
A loyalty ability with a negative loyalty cost can’t be activated unless the permanent has at least
February 1, 2010 · Worldwake
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.