Rules glossary
↑ Parent rule: 506.3 Only a creature can attack or block. Only a player, a planes…
506.3c If an effect would put a creature onto the battlefield attacking either a player not in the game or a permanent that’s no longer on the battlefield or isn’t either a planeswalker or a battle, that creature does enter the battlefield, but it’s never considered to be an attacking creature. See rule 508.4a.
No sub-rules.