Scrabbling Skullcrab
Creature — Crab Skeleton
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, target player mills two cards. (They put the top two cards of their library into their graveyard.)
With sandy beaches in short supply, Duskmourn's crabs have adapted to burrow into everything from carpet to flesh.
John Tedrick
Rulings
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)
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)
Rulings
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)
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)