Delvefall
Central Elevator // Promising Stairs

Central Elevator // Promising Stairs {3}{U} // {2}{U}

Enchantment — Room // Enchantment — Room

When you unlock this door, search your library for a Room card that doesn't have the same name as a Room you control, reveal it, put it into your hand, then shuffle.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)
At the beginning of your upkeep, surveil 1. You win the game if there are eight or more different names among unlocked doors of Rooms you control.
(You may cast either half. That door unlocks on the battlefield. As a sorcery, you may pay the mana cost of a locked door to unlock it.)

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extra filters

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the card's type line must contain this. the filter box takes any word, not just the list: t:legendary, t:aura, or -t:creature to exclude one

only legendary creatures, the cards that can lead a commander deck

hides cards on the official game changer list, for lower-powered brackets

cards that aren't legal in commander (banned and such) stay hidden unless this is on

Cards that do something similar expected a card that isn't here?

Mindwhisker
Mindwhisker 90%
$0.17#8293
"At the beginning of your upkeep, surveil 1."
Morcant's Eyes
Morcant's Eyes 90%
$0.26#11432
"At the beginning of your upkeep, surveil 1."
Think Tank
Think Tank 90%
$0.26#20051
"At the beginning of your upkeep, surveil 1."
Case of the Shifting Visage
Case of the Shifting Visage 90%
$0.33#8672
"At the beginning of your upkeep, surveil 1."
Titans' Nest
Titans' Nest 90%
$0.34#9689
"At the beginning of your upkeep, surveil 1."
Uurg, Spawn of Turg
Uurg, Spawn of Turg 90%
$0.28#7704
"At the beginning of your upkeep, surveil 1."
Broodheart Engine
Broodheart Engine 90%
$0.26#10697
"At the beginning of your upkeep, surveil 1."
Essence Anchor
Essence Anchor 90%
$0.22#8884
"At the beginning of your upkeep, surveil 1."
Search for Azcanta // Azcanta, the Sunken Ruin
Search for Azcanta // Azcanta, the Sunken Ruin 90%
$1.69#3880
"At the beginning of your upkeep, surveil 1. Then if you have seven or more cards in your graveyard, you may transform Search for Azcanta."
Grave Researcher // Reanimate
Grave Researcher // Reanimate 89%
$2.30#3149
"At the beginning of your upkeep, surveil 1. Then if there are three or more creature cards in your graveyard, this creature becomes prepared."
Aminatou, Veil Piercer
Aminatou, Veil Piercer 88%
$0.61#5045
"At the beginning of your upkeep, surveil 2."
Sultai Ascendancy
Sultai Ascendancy 88%
$0.32#8887
"At the beginning of your upkeep, surveil 2."