As the world steeled itself for the New Phyrexian invasion, the heart of the Pinelands awoke, and a new maro-sorcerer strode forth to join the fight.

Dominaria Remastered

Arboria

Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn.

"I have never before felt so unwelcome in a forest."
—Jolrael

Creatures can't attack a player who didn't cast a spell and didn't put a card onto the battlefield during his or her last turn.

If a player does not cast a spell or put a card into play on his or her turn, no creatures may attack that player until after his or her next turn.