Flash Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.

Impending 4—{2}{R}{R} (If you cast this spell for its impending cost, it enters with four time counters and isn't a creature until the last is removed. At the beginning of your end step, remove a time counter from it.) Whenever this permanent enters or attacks, it deals 4 damage to any target.

Defender Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, this creature can attack this turn as though it didn't have defender.

Flying Whenever this creature deals combat damage to a player, unlock a locked door of up to one target Room you control.

{1}, {T}, Sacrifice this artifact: Search your library for a basic land card, reveal it, put it into your hand, then shuffle. {3}, {T}, Sacrifice this artifact: Lock or unlock a door of target Room you control. Activate only as a sorcery.

This creature gets +3/+0 as long as there are two or more unlocked doors among Rooms you control.

Flying Whenever this creature attacks, target creature defending player controls gets -2/-0 and loses flying until your next turn.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {R}.)

This land enters tapped unless a player has 13 or less life. {T}: Add {U} or {R}.

This land enters tapped unless a player has 13 or less life. {T}: Add {U} or {R}.