
Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn.
Arboria has 5 printings, first in Legends (1994). EDHREC ranks it #18,383 among Commander cards. It appears most in Dosan the Falling Leaf decks (32 on EDHREC). It has 4 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.