Yuan-Ti Fang-Blade

Mana cost: {2}{B}
Type: Creature — Snake Rogue
Power / toughness: 2 / 2
Set: Adventures in the Forgotten Realms #128 (common)
Price: $0.13 USD

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

Yuan-Ti Fang-Blade has 1 printing, first in Adventures in the Forgotten Realms (2021). EDHREC ranks it #13,823 among Commander cards. It appears most in Sefris of the Hidden Ways decks (2,059 on EDHREC). It has 10 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: legal
modern: legal
pioneer: legal
standard: not legal
brawl: legal

Commanders that run Yuan-Ti Fang-Blade most

Deck counts from EDHREC.

Often played with Yuan-Ti Fang-Blade

Cards that show up in the same decks on EDHREC.

Rulings

2021-07-23: A player may only have one dungeon in the command zone at a time.
2021-07-23: You can only move forward (well, downward) in a dungeon, never backwards or sideways.
2021-07-23: If you somehow venture into the dungeon while a room's ability is on the stack, you will continue on in the dungeon. If you're already in the last room, complete that dungeon and start a new one.
2021-07-23: To venture into the dungeon, a player moves their venture marker into the next room of the dungeon they are currently in. If they aren't currently in a dungeon, that player instead chooses a dungeon card from outside the game, puts it into the command zone, and moves their venture marker onto the first room.
2021-07-23: Dungeons are removed from the game as a state-based action.
2021-07-23: Moving into a dungeon room will cause its room ability to trigger.
2021-07-23: Once you resolve the last room ability of a dungeon, that dungeon is now completed and is removed from the game.
2021-07-23: The player venturing into the dungeon chooses which dungeon they will venture into. They may choose a dungeon that they have already completed this game.
2021-07-23: Choosing the dungeon or room to venture into is part of resolving the venture into the dungeon keyword action. Once that choice is made, players may not respond until after the appropriate room ability has triggered.
2021-07-23: Dungeon cards are not part of a player's deck or sideboard. In both constructed and limited formats, players can use any dungeon card when they venture into the dungeon.

Printings

Adventures in the Forgotten Realms #128