As The Black Gate enters, you may pay 3 life. If you don’t, it enters tapped. : Add . , : Choose a player with the most life or tied for most life. Target creature can’t be blocked by creatures that player controls this turn.
The creature that was targeted by The Black Gate's last ability can't be blocked by any creature the chosen player controls, including creatures that weren't on the battlefield when The Black Gate's ability resolved.
16-06-2023
wotc
The chosen player needs only to have the most life or tied for most life as The Black Gate's last ability resolves. After the ability resolves, any changes in life total won't affect which creatures can block or be blocked that turn.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.