Sefris of the Hidden Ways must be on the battlefield for its first ability to trigger. It does not trigger when Sefris goes to the graveyard from the battlefield, even if other creature cards also went to the graveyard at the same time.
Sefris of the Hidden Ways
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.
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.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Ryan Pancoast
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
