Cheapest priced copy (The Lost Caverns of Ixalan Promos): $1.29 at Card Kingdom, near mint, their price list as of .
Preacher of the Schism 
Creature — Vampire Cleric · 2/4 · Rare · The Lost Caverns of Ixalan · #367
Deathtouch
Whenever this creature attacks the player with the most life or tied for most life, create a 1/1 white Vampire creature token with lifelink.
Whenever this creature attacks while you have the most life or are tied for most life, you draw a card and you lose 1 life.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
5 printings · $1.29 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 113 | Rare | $1.79 | $1.49 |
| The Lost Caverns of Ixalan | 367 | Rare | $1.99 | $2.49 |
| The Lost Caverns of Ixalan Promos | 113p | Rare | $1.29 | $1.49 |
| The Lost Caverns of Ixalan Promos | 113s | Rare | — | $2.29 |
| Store Championships | 34 | Rare | — | $2.49 |
4 rulings from Wizards of the Coast
- 10 November 2023Preacher 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.
- 10 November 2023If 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.
- 10 November 2023Once 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.
- 10 November 2023Similarly, 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.