Historical Rules · 1 May 2011
Rule 506.3
Official source text from the 1 May 2011 Rules release
Only a creature can attack or block. Only a player or a planeswalker can be attacked.
Historical Rules · 1 May 2011
Official source text from the 1 May 2011 Rules release
Only a creature can attack or block. Only a player or a planeswalker can be attacked.