Historical Rules · 5 June 2017
Rule 202.2
Official source text from the 5 June 2017 Rules release
An object is the color or colors of the mana symbols in its mana cost, regardless of the color of its frame.
Historical Rules · 5 June 2017
Official source text from the 5 June 2017 Rules release
An object is the color or colors of the mana symbols in its mana cost, regardless of the color of its frame.