Fear of Sleep Paralysis — ruling 1

While you control Fear of Sleep Paralysis, if a permanent an opponent controls with a stun counter would untap, it doesn't untap and the stun counter isn't removed.

Fear of Sleep Paralysis — ruling 2

If an ability tries to move a stun counter from a permanent an opponent controls to another permanent while you control Fear of Sleep Paralysis, that counter won't move. No stun counters will be removed from or put onto anything.

Fear of Sleep Paralysis — ruling 3

While you control Fear of Sleep Paralysis, opponents can't use tapped permanents with stun counters on them to pay costs that include untapping a permanent. This includes costs that use the {Q} (untap) symbol.

Fear of Sleep Paralysis — ruling 4

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.

Fear of Sleep Paralysis — ruling 5

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.

Fear of Sleep Paralysis : règles, fonctionnement et interactions (MTG)

Fear of Sleep Paralysis is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Flying Eerie — Whenever this creature or another enchantment you control enters and whenever you fully unlock a Room, tap up to one target creature and put a stun counter on it. Stun counters can't be removed from permanents your opponents control. (They won't untap if they have stun counters.)

How it works : Fear of Sleep Paralysis

Original English text — Wizards of the Coast / Scryfall

#1September 20, 2024· Wizards of the Coast
While you control Fear of Sleep Paralysis, if a permanent an opponent controls with a stun counter would untap, it doesn't untap and the stun counter isn't removed.
No other card is named in this ruling.
#2September 20, 2024· Wizards of the Coast
If an ability tries to move a stun counter from a permanent an opponent controls to another permanent while you control Fear of Sleep Paralysis, that counter won't move. No stun counters will be removed from or put onto anything.
No other card is named in this ruling.
#3September 20, 2024· Wizards of the Coast
While you control Fear of Sleep Paralysis, opponents can't use tapped permanents with stun counters on them to pay costs that include untapping a permanent. This includes costs that use the (untap) symbol.
No other card is named in this ruling.
#4September 20, 2024· Wizards of the Coast
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.
No other card is named in this ruling.
#5September 20, 2024· Wizards of the Coast
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.
No other card is named in this ruling.