Historical Rules · 18 June 2010
Rule 306.5c
Official source text from the 18 June 2010 Rules release
The loyalty of a planeswalker on the battlefield is equal to the number of loyalty counters on it.
Historical Rules · 18 June 2010
Official source text from the 18 June 2010 Rules release
The loyalty of a planeswalker on the battlefield is equal to the number of loyalty counters on it.