Historical Rules · 1 February 2012
Rule 606.5
Official source text from the 1 February 2012 Rules release
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.
Historical Rules · 1 February 2012
Official source text from the 1 February 2012 Rules release
A loyalty ability with a negative loyalty cost can't be activated unless the permanent has at least that many loyalty counters on it.