Lost Mine of Phandelver — ruling 1

Dungeon cards are nontraditional Magic cards that begin outside the game. They are not part of a player's deck or sideboard.

Lost Mine of Phandelver — ruling 2

Dungeon cards may be put into a player's command zone using the venture into the dungeon keyword action found on some cards from the Adventures in the Forgotten Realms set. If any other effect tries to bring a dungeon card into the game, it fails to do so.

Lost Mine of Phandelver : règles, fonctionnement et interactions (MTG)

Lost Mine of Phandelver 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

Cave Entrance — Scry 1. (Leads to: Goblin Lair, Mine Tunnels) Goblin Lair — Create a 1/1 red Goblin creature token. (Leads to: Storeroom, Dark Pool) Mine Tunnels — Create a Treasure token. (Leads to: Dark Pool, Fungi Cavern) Storeroom — Put a +1/+1 counter on target creature. (Leads to: Temple of Dumathoin) Dark Pool — Each opponent loses 1 life and you gain 1 life. (Leads to: Temple of Dumathoin) Fungi Cavern — Target creature gets -4/-0 until your next turn. (Leads to: Temple of Dumathoin) Temple of Dumathoin — Draw a card.

How it works : Lost Mine of Phandelver

Original English text — Wizards of the Coast / Scryfall

#1July 23, 2021· Wizards of the Coast
Dungeon cards are nontraditional Magic cards that begin outside the game. They are not part of a player's deck or sideboard.
No other card is named in this ruling.
#2July 23, 2021· Wizards of the Coast
Dungeon cards may be put into a player's command zone using the venture into the dungeon keyword action found on some cards from the Adventures in the Forgotten Realms set. If any other effect tries to bring a dungeon card into the game, it fails to do so.
No other card is named in this ruling.