Balemurk Leech
Creature — Leech
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, each opponent loses 1 life.
Adapted to feed on dead flesh, it's not averse to making its own when no corpses are available.
John Tedrick
Rulings
An ability that triggers "whenever you fully unlock a Room" triggers when a door becomes unlocked and the other door of that Room is already unlocked, or when both doors of that Room become unlocked simultaneously.
(wotc • 2024-09-20)
If a permanent with an eerie ability enters at the same time as one or more enchantments, its ability will trigger for each of those enchantments.
(wotc • 2024-09-20)
Rulings
An ability that triggers "whenever you fully unlock a Room" triggers when a door becomes unlocked and the other door of that Room is already unlocked, or when both doors of that Room become unlocked simultaneously.
(wotc • 2024-09-20)
If a permanent with an eerie ability enters at the same time as one or more enchantments, its ability will trigger for each of those enchantments.
(wotc • 2024-09-20)