Commander creatures you own have "Room abilities of dungeons you own trigger an additional time."

Enchant creature Enchanted creature has flying and "Whenever this creature deals combat damage to a player, venture into the dungeon." (Enter the first room or advance to the next room.)

This spell costs {1} less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) Search your library for a card, put it into your hand, then shuffle. If you have a full party, you may cast a spell with mana value 4 or less from your hand without paying its mana cost.

Look at the top X cards of your library, where X is three plus the number of creatures in your party. Put three of those cards into your hand and the rest on the bottom of your library in a random order. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

{T}: Add one mana of any color in your commander's color identity.

Equipped creature gets +1/+1. Whenever equipped creature attacks, venture into the dungeon. (Enter the first room or advance to the next room.) Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery.)

{T}: Add {C}. {3}, {T}: Venture into the dungeon. Activate only as a sorcery. (Enter the first room or advance to the next room.)

This artifact enters tapped. {2}, {T}, Sacrifice this artifact: You take the initiative, gain 3 life, draw a card, and create a Treasure token. Activate only as a sorcery. (A Treasure token is an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

Equipped creature has lifelink if you control a Cleric, deathtouch if you control a Rogue, haste if you control a Warrior, and flying if you control a Wizard. As long as you have a full party, prevent all damage that would be dealt to equipped creature. Equip {2}

Counter target creature or planeswalker spell. Venture into the dungeon. (Enter the first room or advance to the next room.)

Counter target noncreature spell unless its controller pays {1} plus an additional {1} for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

This spell costs {1} less to cast for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) You gain 3 life and draw three cards.

When this creature enters, each player sacrifices a nontoken creature of their choice.

Flying Whenever this creature attacks, look at the top four cards of your library. You may reveal a Cleric card, a Rogue card, a Warrior card, and/or a Wizard card from among them and put those cards into your hand. Put the rest on the bottom of your library in a random order.

When this creature enters, you take the initiative. Whenever you attack, target attacking Cleric, Rogue, Warrior, or Wizard gains protection from creatures until end of turn. It explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on the creature, then put the card back or put it into your graveyard.)

Discard a card: Tap this creature. It gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Archpriest of Iona's power is equal to the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) At the beginning of combat on your turn, if you have a full party, target creature gets +1/+1 and gains flying until end of turn.

When Barrowin enters, venture into the dungeon. (Enter the first room or advance to the next room.) Whenever Barrowin attacks, return up to one creature card with mana value 3 or less from your graveyard to the battlefield if you've completed a dungeon.

Sacrifice this creature: Target creature you control gains protection from the color of your choice until end of turn.

Vigilance Whenever this creature attacks, you may return target creature card with mana value 3 or less from your graveyard to the battlefield.

{W}, {T}: Search your library for a land card, reveal it, put it into your hand, then shuffle. Activate only if an opponent controls more lands than you.

This land enters tapped. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a Cleric, Rogue, Warrior, or Wizard spell or to activate an ability of a Cleric, Rogue, Warrior, or Wizard.

Flying When this creature enters, venture into the dungeon. (Enter the first room or advance to the next room.) At the beginning of combat on your turn, if you've completed a dungeon, up to one target creature becomes a Bird with base power and toughness 1/1 and flying until end of turn.

Room abilities of dungeons you own trigger an additional time.

Flying At the beginning of combat on your turn, if you have a full party, choose target nonland permanent an opponent controls. Until your next turn, it can't attack or block, and its activated abilities can't be activated. Sacrifice Linvala: Choose hexproof or indestructible. Creatures you control gain that ability until end of turn.

Creatures you control can't be blocked except by legendary creatures. Whenever one or more creatures you control deal combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)

This spell costs {1} less to cast for each different mana value among cards in your graveyard. Whenever you discard a nonland card, you may cast it from your graveyard.

Burakos is also a Cleric, Rogue, Warrior, and Wizard. Whenever Burakos attacks, defending player loses X life and you create X Treasure tokens, where X is the number of creatures in your party. Choose a Background (You can have a Background as a second commander.)

Vigilance Whenever Nadaar enters or attacks, venture into the dungeon. (Enter the first room or advance to the next room.) Other creatures you control get +1/+1 as long as you've completed a dungeon.

Flying, lifelink Whenever this creature or another nontoken creature you control enters, venture into the dungeon. (Enter the first room or advance to the next room.) {W}, Discard this card: Venture into the dungeon and you gain 3 life.

When this creature enters, you take the initiative. Whenever you cast your second spell each turn, copy it. If you've completed a dungeon, copy that spell twice instead. You may choose new targets for the copies. (A copy of a permanent spell becomes a token.)

Deathtouch Whenever another nontoken creature you control dies, this creature connives. When this creature dies, return another target non-Rogue creature card with equal or lesser power from your graveyard to the battlefield.

Whenever this creature becomes untapped, you may pay {2}. If you do, draw a card. Whenever an opponent casts a spell from anywhere other than their hand, draw a card. Discard a card: This creature can't be blocked this turn.

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever this creature deals damage to an opponent, draw a card, then discard a card.

You may look at the top card of your library any time. You may cast Cleric, Rogue, Warrior, and Wizard spells from the top of your library. At the beginning of combat on your turn, if you have a full party, put a +1/+1 counter on each creature you control and those creatures gain deathtouch until end of turn.

This creature can't be blocked if you had another Cleric, Rogue, Warrior, or Wizard enter the battlefield under your control this turn. At the beginning of combat on your turn, if you have a full party, creatures you control gain "Whenever this creature deals combat damage to a player, draw a card" until end of turn.

When this creature enters, you take the initiative. If a creature an opponent controls would die, instead exile it and put a hit counter on it. Whenever this creature attacks, if you've completed a dungeon, defending player loses 1 life for each card they own in exile with a hit counter on it.

Deathtouch When Rilsa Rael enters, you take the initiative. Whenever you attack, target attacking creature gains deathtouch until end of turn. If you've completed a dungeon, that creature also gets +5/+0 and gains first strike and menace until end of turn.

Whenever this creature deals combat damage to a player, venture into the dungeon. (Enter the first room or advance to the next room.)