2023-11-10 : If you are tied for most life and Preacher of the Schism attacks another player who is tied for most life, both its middle and its last ability will trigger.

2023-11-10 : Once Preacher of the Schism's middle ability triggers, it doesn't matter what happens to players' life totals before the ability resolves. You'll create a Vampire token even if the player Preacher of the Schism attacked doesn't have the most life as the ability resolves.

2023-11-10 : Preacher of the Schism's middle ability triggers only if it attacks a player. It won't trigger if Preacher of the Schism attacks a planeswalker or battle, no matter what its controller's life total is.

2023-11-10 : Similarly, once Preacher of the Schism's last ability triggers, it doesn't matter what happens to players' life totals before the ability resolves. You'll draw a card and lose 1 life even if you don't have the most life as the ability resolves.