Lurking Green Dragon
Creature — Dragon
Flying
This creature can't attack unless defending player controls a creature with flying.
"Territorial. Scary. No further notes." —Volo's field notes
Caio Monteiro
Rulings
Lurking Green Dragon's second ability applies only while you're declaring attackers. It is not removed from combat if the creature with flying leaves the battlefield, changes controllers, or loses flying after Lurking Green Dragon is declared as an attacker.
(wotc • 2022-06-10)
If a creature attacks a planeswalker, that planeswalker's controller is the defending player.
(wotc • 2022-06-10)
Rulings
Lurking Green Dragon's second ability applies only while you're declaring attackers. It is not removed from combat if the creature with flying leaves the battlefield, changes controllers, or loses flying after Lurking Green Dragon is declared as an attacker.
(wotc • 2022-06-10)
If a creature attacks a planeswalker, that planeswalker's controller is the defending player.
(wotc • 2022-06-10)