Historical Rules · 18 June 2010
Rule 506.3
Official source text from the 18 June 2010 Rules release
Only a creature can attack or block. Only a player or a planeswalker can be attacked.
Historical Rules · 18 June 2010
Official source text from the 18 June 2010 Rules release
Only a creature can attack or block. Only a player or a planeswalker can be attacked.