Elvish Warmaster [Kaldheim Prerelease Promos] HER009-P The Church of Dusk teaches

The Church of Dusk teaches there is no gain without loss

but if it switches it won't be able to switch back

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

Mana Crypt deals 3 damage to you

Elvish Warmaster [Kaldheim Prerelease Promos] HER009-P The Church of Dusk teachesSet: Kaldheim Prerelease Promos Type: Creature Elf Warrior Rarity: Rare Cost: {1}{G} Whenever one or more other Elves enter the battlefield under your control, create a 1 1 green Elf Warrior creature token. This ability triggers only once each turn. {5}{G}{G}: Elves you control get +2 +2 and gain deathtouch until end of turn.